お問い合わせ前の確認事項
b.ringのご利用中に問題が発生した場合は、お問い合わせいただく前に以下の項目をご確認ください。
【b.race】 I got a new smartphone. How do I move my data?
Here’s how to restore your existing data on a new device.
1. Check the account you’re logged into in the app on your old phone.
2. Install the b.ring app on your new phone and log in with the same account.
3. In the app, go to My Page > Data Restore > select a date > Restore Data to bring back the measurement data saved in the cloud.
【b.race】 The connection drops frequently.
If the connection drops often, please check the following.
1. Make sure the band and smartphone are not too far apart. Beyond 7 m, the Bluetooth signal may weaken.
2. Check for obstacles between the band and phone, and make sure metal or jewelry isn’t interfering with the signal.
3. Make sure the band has enough battery. A low battery makes the connection unstable.
4. Check that Bluetooth is working properly, and restart the app or reconnect the band if needed.
5. When the app runs in the background, your phone may automatically disconnect Bluetooth to save power. Allow background activity in your settings.
6. After restarting your phone, Bluetooth may not reconnect automatically, so reconnect it from the settings.
【b.race】 The band won’t connect to my smartphone.
If b.race (device name “b.race R1”) does not appear in your Bluetooth settings or pairing fails, please check the following.
1. Make sure your smartphone meets the requirements (iOS 15.6 or later, Android 8.0 or later; the latest version is recommended).
2. Check that the band is powered on. Press the side button once briefly; if a light appears on the opposite side, the band is on. If no light appears, press and hold the side button to turn it on. If it won’t turn on, it needs charging.
3. Turn your smartphone’s Bluetooth off and on again.
4. Fully close the b.ring app and restart it.
5. Close all other apps, restart Bluetooth, and reconnect.
6. Make sure the band is close to your smartphone (within 1 m).
【b.race】 Data syncing is slow or fails.
If data isn’t syncing smoothly, please check the following.
1. Make sure Bluetooth is connected properly. If not, first refer to the connection troubleshooting steps above.
2. Open the app and pull down on the home screen (pull to refresh), or tap the circular button at the top right to restart the sync.
3. Check that the Bluetooth connection didn’t drop or time out during syncing.
【b.ring】 The smart ring isn’t being found or can’t be connected at all.
When the device isn’t recognized, you’ll need to reset the smartphone’s Bluetooth cache and the device’s power state.
1. Remove from the smartphone’s native Bluetooth list (most important): If b.ring is paired directly in your smartphone’s [Settings] > [Bluetooth] paired-devices list, the app won’t be able to find it. If you see b.ring in that list, be sure to tap [Unpair] or [Forget This Device], then reconnect from the app.
2. Place on the charging dock and search again: The device may be completely discharged or in a power-saving state. Place the ring on the charging dock, confirm the charging light (power supplied) is on, and search for the device in the app while it stays in that state.
3. Select the correct model: When trying to connect in the app, double-check that you’ve selected the exact b.ring model you’re using (G2, Pro, etc.).
【b.ring】 The connection (sync) between the smartphone and ring keeps dropping.
Bluetooth Low Energy (BLE) devices may have background communication temporarily restricted by the battery management policies of mobile operating systems (Google Android / Apple iOS).
1. Allow background app permission (required)
2. Android: In smartphone [Settings] > [Apps] > [b.ring] > [Battery], change the setting to “Unrestricted.”
3. iOS: In smartphone [Settings] > [b.ring], enable “Background App Refresh.”
4. Bluetooth interference and distance: Due to the nature of Bluetooth, having many wireless devices nearby (Wi-Fi router, other Bluetooth devices, etc.) or being too far from your smartphone can disconnect the connection. When sync drops, restart the app while keeping the ring and smartphone close together.
【b.ring】 Bluetooth sync (connection) doesn’t work at all.
If your device won’t connect, please try the following steps in order.
1. Check the smartphone’s native Bluetooth settings (most important)
2. If b.ring is already paired directly in your smartphone’s [Settings] > [Bluetooth] device list, the app won’t be able to find it.
3. If it’s already registered there, tap [Unpair] or [Forget This Device] to remove it completely.
4. Then launch the b.ring app and search for and connect to the ring from within the app.
5. Try connecting while charging: The battery may be fully discharged, or the device may have entered a temporary sleep (standby) state. Place the ring on the charging dock, confirm the charging light is on (power is supplied), and try connecting in the app while it stays in that state.
6. Restart Bluetooth and the app: Turn your smartphone’s Bluetooth off and on, then force-close and relaunch the b.ring app.
【b.ring】 Syncing keeps stopping or failing partway through.
Sync interruptions are usually caused by communication distance or process limits on your smartphone.
1. Keep the app on screen: While syncing, don’t send the app to the background (don’t go to the home screen) or navigate to other menus—please wait until it completes.
2. Keep the screen on: If your smartphone screen turns off (locks) during sync, OS policies may cut off communication. Keep the screen on.
3. Maintain close proximity: Due to the nature of the Bluetooth antenna, keeping the smart ring and smartphone as close together as possible (essentially touching) during sync is most stable.
4. Update to the latest version: For stable connections, always check that the b.ring app is up to date in the Google Play Store or Apple App Store.
【b.race】 It won’t charge.
b.race uses magnetic charging. If it won’t charge, please check the following.
1. Wipe the charging contacts on the cable and the band with a soft cloth. Debris can prevent the magnet from attaching or block charging.
2. Make sure the magnet on the charging cable is properly attached to the band’s contacts.
3. Make sure the charging cable is properly connected to the USB adapter.
4. Check that the indicator lights up when charging starts.
5. If none of this resolves the issue, please contact customer support.
【b.race】 How do I charge it, and how long does it take?
1. b.race uses magnetic charging. Align the dedicated charging cable with the charging contacts on the back of the band so the magnet attaches. When attached correctly, the indicator lights up and charging begins.
2. A full charge takes about 1 hour.
3. A single charge lasts up to about 12 days, depending on usage.
【b.race】 The battery drains too quickly.
If the battery drains faster than usual, try the following.
1. If you’re using real-time measurement in the app, turn it off. Real-time measurement uses a lot of battery.
2. If you don’t use call/message notifications, turn them off.
3. Make sure the firmware is up to date.
4. The b.race battery lasts up to about 12 days on a single charge, though this varies with usage (real-time measurement, notifications, how often you record workouts, etc.).
【b.ring】 Charging proceeds but is too slow, or stops at specific points (75%, 80%, 99%, etc.).
b.ring has overheating/overcharging protection systems for battery life and safety. If charging efficiency drops or it stops at a specific point, please check the following.
1. Use of low-power chargers is recommended: If you use a high-output fast charger (PD/QC charger) or a multi-port charger, the smart ring’s safety circuit may activate, cutting off current or making charging unstable. Whenever possible, connect to a standard 5V/1A (15W or less) adapter or a USB port on a PC.
2. Battery protection range: To prevent battery performance degradation, charging speed may intentionally slow once the battery is in the high-voltage range above 80%. This is normal battery management behavior.
3. Check the seating of Pro models: For b.ring Pro models, if the position on the charging dock is slightly off, the charging indicator (LED) may turn on but the actual charging current may be weak. After placing the ring on the dock, gently rotate it left and right so the contacts align perfectly.
【b.ring】 Even when placed on the charging dock, it doesn’t charge at all.
If charging doesn’t progress, check the physical contact condition and how it’s seated on the charging dock.
1. Check the dock play and reposition (normal design spec): The b.ring charging dock has a small amount of structural play so users can easily insert and remove the ring. After placing the ring on the dock, gently rotate it left and right so the dock’s contacts and the ring’s contacts align precisely, then check that the charging light (LED) turns on.
2. Clean the charging contacts: If sweat or debris is on the brass-colored charging terminals on the inside of the ring or on the dock’s pins, current can’t flow. Wipe the contact area thoroughly with a dry cloth or cotton swab, then place the ring back on the dock.
3. Try a different charging head or cable: With high-output fast chargers (PD chargers, etc.), current may be cut off to protect the device. Try connecting the cable to a standard adapter (5V/1A) or a USB port on a PC.
【b.ring】 The battery drains much faster than usual.
If your b.ring battery seems to be draining unusually fast, please try the following step-by-step optimization process.
1. Check the initial battery optimization period: When you first buy the product or right after a firmware update, the ring learns and stabilizes its model of your biometric data, which can temporarily increase power consumption. Wear it continuously for at least a week and see whether battery efficiency stabilizes.
2. If discharging is still fast after a week, there may be a sync mismatch between the ring’s internal measurement timer and the app settings.
Step 1: In the app [My Page] > [Auto Measurement Mode], temporarily change the measurement frequency to a different mode.
Step 2: Reset the device (disconnect, then reconnect).
Step 3: Go back into [Auto Measurement Mode] and restore your preferred measurement mode.
3. Adjust the auto-measurement interval: The shorter the auto-measurement interval, the more often the sensor activates, draining the battery faster. Adjust the measurement interval to a longer setting to match your usage.
【b.race】 The step count differs between the home and activity screens.
The home screen and widget show your step count in real time, but the count on the activity screen updates after the band syncs with the app.
This can cause a temporary difference, but they match once syncing is complete.
【b.race】 How are blood oxygen and stress measured?
b.race uses its heart rate sensor to measure blood oxygen saturation and a stress index.
1. For accurate measurement, wear the band snugly on your arm and keep your arm still during measurement.
2. Excessive movement or a loose band can make measurements inaccurate.
3. The stress index is calculated from heart rate variability (HRV) and is a reference indicator.
* This feature is for informational purposes only and is not a substitute for medical diagnosis.
【b.race】 Are there factors that affect measurement accuracy?
Measurement accuracy is affected by how you wear the band and by physical conditions.
If the band is loose, positioned incorrectly, or if your arm is tensed or your fist is clenched, blood flow may be restricted and measurements can become inaccurate.
For accurate readings, wear the band snugly while keeping still.
Results may also vary depending on skin tone, tattoos, scars, and individual physical differences.
【b.race】 My workout wasn’t recorded correctly.
Wearing the band correctly is very important for accurate workout records. Please check the following.
1. Make sure the band isn’t too loose and fits snugly on your arm.
2. Wear it so the sensor makes good contact with your skin.
3. Check that the sensor is clean, and wipe it with a soft cloth if needed.
4. In cold weather, outdoor exercise can chill your skin and slow the sensor’s response.
5. If the connected smartphone is too far away, data may not transmit properly.
6. Check that you didn’t accidentally press [Stop] during your workout, which can halt recording.
7. Wear the band securely, since a loose band that moves a lot makes measurement difficult.
8. Heavy sweating can cause measurement errors, so wipe sweat from your skin and the band and keep it dry.
If the problem persists, contact customer support.
【b.race】 My workout route (map) isn’t recorded.
The b.race band itself doesn’t have built-in GPS, so workout routes are recorded using your smartphone’s GPS. To record a route during outdoor exercise, carry your smartphone with you and grant the app location permission.
1. Check that the app’s location permission is set to “Allow.”
2. In places with weak GPS signal, such as indoors or between tall buildings, the route may be inaccurate.
3. If you exercise without your smartphone, the route won’t be recorded, but band data like steps and heart rate is still saved.
【b.race】 Heart rate measurement (Measure Now / auto) isn’t working.
If heart rate measurement isn’t working, try the following.
1. Reset the band (My Page > Device Settings > Reset Device).
2. Reinstall the app.
3. Reconnect the band or reconfigure auto-measurement mode (My Page > Auto Measurement Mode > Heart Rate).
Also make sure the band fits snugly on your arm and the sensor is clean.
If it still doesn’t improve, please contact customer support.
【b.race】 My heart rate data isn’t showing.
The band only stores a limited period of heart rate data.
So if you haven’t synced for several days, heart rate data may not appear.
Please open the app and sync regularly.
【b.race】 It differs from my actual sleep time.
Sleep is measured automatically based on a stable heart rate and low movement.
As a result, even when you’re actually awake, a relaxed body may sometimes be judged as “sleep.”
We plan to reduce this kind of discrepancy through future accuracy improvements.
【b.race】 It differs from my actual step count.
b.race uses a 6-axis sensor designed to detect even small movements, so arm movements may sometimes be counted as steps even when you’re not walking.
It may also differ from other wearables like smartwatches because the measurement method is different.
This is a characteristic of the device, so please use the figures as a reference.
【b.race】 My sleep isn’t measured, or it’s inaccurate.
For accurate sleep measurement, please check the following.
1. Make sure the band fits snugly on your arm—not too loose or too tight.
2. Wear it so the sensor makes good contact with your skin.
3. Check that the sensor is clean, and wipe it with a soft cloth if needed.
4. Put the band on before you fall asleep.
5. Make sure the band has enough battery. If it dies during sleep, records may be missed.
6. If data hasn’t synced with the app, sleep records may not appear. If the problem persists, reset the band and reconnect it.
【b.ring】 Workout mode records seem off or aren’t saving correctly.
Workout mode is a feature that simultaneously measures real-time data and links with your smartphone’s GPS.
1. Check location (GPS) permissions: To record an accurate route and distance during workouts, check that b.ring’s location permission is set to “Always Allow” in your smartphone [Settings].
2. Sync immediately after ending the workout: After finishing, be sure to press the [End Workout] button in the app to clearly close the session—this is required for data to save properly. Right after ending, run a manual sync from the home screen to safely transfer the workout data to the app.
3. Don’t forget to end the session: If workout mode is left on for a long time, abnormal data may be recorded or previous records may become corrupted.
【b.ring】 Blood oxygen readings differ from reality and come out too high or otherwise strange.
b.ring uses an optical sensor to analyze blood flow at the skin’s surface and estimate blood oxygen saturation.
1. General wellness product notice: This product is not a medical device—it’s intended for general health management and wellness reference. As such, comparing the data measured by the device with measurements from a medical device on equal terms, or interpreting it for medical diagnostic purposes, is difficult.
2. Block external light interference: If the ring is worn loosely and there are gaps between your skin and the sensor, external light sources (sunlight or indoor lighting) can enter the sensor, causing blood oxygen values to be abnormally high or unstable. Recheck the wearing direction and size so the ring fits without rotating on your finger.
【b.ring】 Blood oxygen (SpO2) data isn’t being recorded automatically.
Blood oxygen saturation measurement is very sensitive to small movements and how the ring is worn. If automatic recording is being missed, please check the following.
1. Correct direction and snug fit: The red LED sensor (or the b logo) on the inside of the ring must face the palm side (under your finger). If the ring is worn loosely on your finger with gaps, light loss will cause measurements to be automatically canceled. Wear it in a size that fits snugly on your finger.
2. Allow smartphone background permissions: The mobile OS’s battery-saving features can block automatic background data collection. In your smartphone’s [Settings] > [Apps] > [b.ring], change the battery setting to “Unrestricted” and make sure Bluetooth and location permissions are always allowed.
3. Check sensor operation: When you manually measure blood oxygen via “Measure Now” on the app’s home screen, check that the red LED on the inside of the ring lights up properly.
【b.ring】 The temperature (or skin temperature) looks too high or strange.
Please check the following.
1. Skin temperature may not exactly match a regular thermometer reading.
2. Keep the app and firmware up to date.
3. Turn the relevant measurement item OFF and then ON again.
4. Check whether other measurements also look abnormal.
5. Also check whether battery drain is unusually fast.
【b.ring】 The temperature (or skin temperature) reading is different from a regular thermometer and seems off.
Understanding the characteristics of the temperature data b.ring measures will help you use the data correctly.
1. Skin temperature vs core body temperature (normal spec info): The value b.ring measures is not the “core body temperature” measured by a medical thermometer (under the tongue or armpit), but the “skin temperature” on the surface of your finger. Skin temperature varies constantly with outside temperature, sleep environment (temperature under your blanket), how tightly the ring fits, etc., so it’s normal for it to differ from a regular thermometer reading.
2. Use as trend data: This feature isn’t intended for absolute body temperature measurement—use it to monitor the trend of changes against your usual nighttime skin temperature baseline and detect changes in your condition.
3. Check the snug fit: If the ring is too loose, outside air temperature can affect the sensor and produce abnormally low or high readings, so wear it in a size that fits your finger.
【b.ring】 Heart rate data feels different from reality. (Too high or too low)
b.ring measures your heart rate by detecting blood flow in finger capillaries using an optical sensor (PPG). The following environmental factors can cause temporary errors.
1. Check for sensor debris: Sweat, cosmetics, dust, or other debris on the inner sensor surface can distort the light and produce inaccurate values. Wipe the sensor area thoroughly with a soft dry cloth or a wet wipe and let it dry completely before wearing.
2. Loose fit: If the ring is too loose, external light (sunlight, indoor lighting, etc.) can enter the sensor and interfere with measurements. Wear it in a size that fits snugly on your finger for better accuracy.
3. Temporary signal errors: Strong gripping or stretching of the hand, or activities that compress the finger heavily, can temporarily affect blood flow and cause errors. Compare again while you’re resting comfortably.
【b.ring】 Heart rate isn’t recorded and shows up empty.
If there’s no heart rate data for a specific period or an entire day, please try the following steps.
1. Reset the Auto Measurement Mode timer: There may be a temporary sync mismatch between the ring’s internal measurement timer and the app settings. In the app, go to [My Page] > [Auto Measurement Mode], temporarily change the measurement interval to a different mode, reset the device (disconnect and reconnect), then restore the desired mode.
2. Check the sensor lights: When an auto-measurement cycle begins, check that the green LED inside the ring lights up properly.
3. Adjust the wearing position: If the sensor is positioned over a knuckle or another bony part of the finger with little flesh, blood flow measurement can be difficult. Move the ring slightly so the sensor sits on the soft inner part of your finger.
【b.ring】 The “Measure Now” function isn’t working.
If the “Measure Now” function fails when you want to take a measurement at a specific moment, please check the following.
1. Minimize movement during measurement (most important): The PPG sensor in the smart ring measures subtle blood flow, so any finger or body movement during measurement distorts the signal and cancels the reading. Rest your hand comfortably on a flat table and stay still and quiet until the measurement completes.
2. Check sensor operation (LED): When measurement starts, check that the designated light inside the ring flashes properly (heart rate: green LED; blood oxygen: red LED). If the light doesn’t come on, you’ll need to check your Bluetooth connection or battery level.
3. Wear it snugly: When the sensor is in light, close contact with the inside of your finger, light loss is minimized and measurement is more accurate.
【b.ring】 Sleep data isn’t being shown at all.
If sleep data is missing, check whether the conditions required for the device to detect sleep (heart rate and motion measurement) are being met.
1. Check sensor direction and snug fit: Make sure the ring’s internal sensor (or the b logo) is facing the palm side (under your finger). If the ring rotates during sleep so the sensor faces the back of your finger, or if it’s too loose, it won’t be able to detect the blood flow signals needed for sleep determination and won’t record data.
2. Check whether other data is being recorded: If other biometric data such as heart rate or blood oxygen also aren’t showing, check that [Auto Measurement Mode] is properly enabled under [My Page] in the app.
3. Restore data and sync manually: Due to platform (Google/Apple) policies, background sync is restricted while the app is closed. In the morning, open the b.ring app and pull down on the home screen to complete a manual sync all the way through, or run [Restore Data] in the app menu.
【b.ring】 Sleep is recorded as too long, too short, or otherwise inaccurate.
b.ring measures sleep stages by analyzing heart rate variability (HRV) and subtle movements together. For more accurate sleep measurement, please check the following.
1. Correct wearing direction and snug fit (most important): Wear the ring so the internal sensor (or the b logo) faces the palm side (under your finger). The PPG sensor needs to be in close contact with the blood vessels on the inside of your finger for accurate sleep analysis. If the ring rotates on your finger, records may be missed.
2. Pre-sleep behavior: If you lie on the bed and use your phone for a long time before sleeping, or rest quietly, the device may interpret it as “sleep onset” and record a longer sleep time.
3. Movement during sleep: If you toss and turn a lot, or your heart rate changes rapidly (e.g., during dreams), the device may interpret it as “awake” and record a shorter time than actual sleep. As continued wear builds up data, accuracy improves.
【b.ring】 The sensor calibration menu isn’t visible, or calibration has no effect.
Sensor calibration is an auxiliary function for improving measurement accuracy and is applied differently depending on the model and firmware version.
1. Check supported models: Sensor calibration is a menu that’s only enabled on certain models with specific sensors. Please verify the detailed specifications of the b.ring model you’re using.
2. Allow time for data to accumulate: You may not see a big change immediately after running sensor calibration. To let the calibrated sensor learn your new movement patterns, wear the ring continuously for at least a day after calibration and observe the data.
3. Keep everything up to date: Occasionally, an outdated app version may cause menus to be missing or errors to occur, so please keep both the app and the ring’s firmware up to date.
【b.ring】 Data for a certain time period is empty or missing.
If some time periods of data appear to be missing, please check the following.
1. Background sync policy: For battery efficiency and security, b.ring doesn’t send data in real time while the app is closed. If you’ve gone a while without opening the app, it may take time to retrieve all the missed data—please keep the app open and wait a moment.
2. Smartphone time settings: In your smartphone settings, check that [Date & Time] is set to “Automatic (use network-provided time).” If the time is set manually, data timestamps can become inconsistent and not display properly.
3. Time worn and charging status: While the ring is off your finger or sitting on the charging dock, biometric data and activity are not measured.
【b.ring】 Step count differs from my phone. (Too many or too few)
The smartphone and smart ring detect motion differently because of where they’re worn and how they sense movement, so differences in data are normal.
1. Difference in measurement method: A smartphone typically detects “pelvic movement” while in your pocket or bag, while the smart ring measures steps based on “hand swing and motion.”
2. Effect of everyday activities: When you do activities that involve a lot of hand movement (driving, brushing teeth, typing, gardening, etc.), your step count may temporarily appear higher than expected.
3. How to compare accurately: When comparing data, use the “total daily activity” as the reference. Also, wear the ring in a size that fits snugly so it doesn’t rotate on your finger.
【b.ring】 The step count isn’t displayed at all or doesn’t update.
If your b.ring step data isn’t showing up, please check the following in order.
1. Check the correct wearing direction: Make sure the sensor inside the smart ring faces the palm side (under your finger). The ring should fit snugly on your finger—not too loose—for accurate measurement.
2. Run a manual sync in the app: Due to mobile OS (Google/Apple) policies, real-time syncing is limited when the app isn’t open. Launch the b.ring app and pull down on the home screen to complete a manual sync.
3. Compare home screen vs detail screen: The number on the home screen updates relatively quickly, but the activity detail screen may take a little longer as data is aggregated.
4. Test with a few steps: Wear the ring and walk 20–30 steps or more, then reopen the app to see whether the number changes.
【b.race】 Does it have a screen (display)?
b.race is a band-type device without a display screen.
You view measured data in the b.ring app, and call/message notifications are indicated by the band’s LED indicator and vibration.
【b.race】 How do I turn it on/off? How can I tell if it’s on?
You control b.race’s power with the button on the side.
1. Power on/off: press and hold the side button, and the device turns on or off with a vibration.
2. Checking power status: press the side button once briefly; if the band is on, a light appears on the opposite side. If no light appears, the band is off—press and hold the button to turn it on.
【b.race】 What colors are available?
b.race comes in two colors: 1. Sky Gray and 2. Dark Black.
【b.race】 What is the band/strap made of? How do I care for it?
The b.race body is made of transparent PC with dual injection molding, the button is aluminum alloy, and the strap is nylon with stainless steel.
It’s light (about 20 g) and comfortable to wear.
If it gets sweaty or dirty, wipe it with a soft cloth and dry it well.
It’s water resistant (5ATM), but leaving the strap wet for long periods can cause skin irritation or odor, so keep it dry.
【b.race】 How do I wear b.race? Is the size adjustable?
b.race is a smart band worn on the arm.
1. Wrap the band around your arm so the sensor makes good contact with your skin.
2. Fasten it snugly—not too loose or too tight. Too loose makes measurements inaccurate, and too tight can be uncomfortable.
3. The strap adjusts within a range of about 18–25 cm.
4. For workouts, wear it a bit more securely so it doesn’t move around.
【b.race】 Is b.race waterproof?
b.race is water resistant to 5ATM. It can be used for everyday water exposure as well as activities in water such as swimming.
However, please note the following.
1. Do not use it in hot water or steam, such as saunas or hot springs, as this can degrade water resistance.
2. Chemicals like soap, shampoo, or detergent can damage the seal, so if they contact the band, rinse it with clean water and wipe it dry.
3. Do not operate the buttons underwater.
4. Moisture left between your skin and the band after wearing can cause skin irritation, so dry it well.
【b.ring】 The product, packaging, or cable arrived damaged.
If you discover damage or a defect right after receiving the product, please check the following for your safety and contact customer support immediately.
1. Stop using it: If the cable’s sheath is peeling or the charging dock contacts are damaged, it may cause a short circuit or device failure. Stop connecting it to power right away.
2. Take photos: For accurate and fast exchange/return processing, please take photos showing the damage on the outer box (shipping box), the product packaging, the device, and the cable.
3. Contact customer support: Send the photos along with your point of purchase and order number through [My Page > Inquiries] in the b.ring app or to our official email (j-help@apposter.com), and we’ll respond quickly.
【b.ring】 Login or sign-up isn’t going through.
If errors occur during b.ring account creation or login, please check the email format and password rules below.
1. Check supported email formats: When signing up, please use a standard personal email address from Google (Gmail), Naver, Kakao, etc. Some specialized carrier-only emails or emails containing special characters (e.g., plus-messaging linked emails) may not work for account creation due to system security and verification email restrictions.
2. Don’t confuse passwords: The password you enter at login is not the email password from a portal site (Naver, Google, etc.), but the dedicated b.ring password you set yourself when signing up for the b.ring app. If you don’t remember your password, reset it via [Forgot Password] at the bottom.
【b.ring】 I keep getting logged out, or my login state keeps being cleared.
A login state not being maintained can occur due to account security policies or multi-device access.
1. Multi-device simultaneous access limit: For the security of personal health data, b.ring allows only one smartphone (device) login per account. If you try to log into the same account on another smartphone or tablet app, the security token on the previously logged-in smartphone expires and you’ll automatically be logged out.
2. Check social login link status: If you’re linked via a social account (Google, Apple, Kakao, etc.), security updates or expired authentication on that social platform app may cause logout. In that case, log in via social login again.
3. Regular server maintenance: For stable service, login sessions may be safely reset immediately after app server maintenance and updates, requiring you to log in again.
【b.race】 What is the heat-risk (heat index) feature?
The heat-index feature shows how much strain the current heat may place on your body, based on environmental data such as temperature and humidity.
You can use it as a guide for taking breaks and staying hydrated during outdoor exercise or travel.
* This feature is for informational purposes only and is not a substitute for medical judgment.
【b.race】 How do I use Calorie AI (meal logging)?
Calorie AI lets you check calories, nutrients (carbs, protein, fat), and an overall health score from a single meal photo.
1. Take or upload a meal photo in the app, and it’s analyzed automatically.
2. If the result differs from reality, you can adjust it with the “Edit” feature.
* Results are for reference; please check product labels and similar sources for accurate nutrition information.
【b.race】 Can I receive call and message notifications?
b.race supports call and message notifications. When a notification arrives, the band’s indicator flashes and it vibrates.
1. Turn on notifications in “My Page” in the app and sync the notification types you want to the band.
2. On iOS, you must allow notification permission during Bluetooth pairing.
3. Notifications won’t arrive if Do Not Disturb (Focus) mode is on.
4. On iOS 13 or later, go to Settings > Bluetooth > your device > and turn on “Share System Notifications.”
5. If notifications from certain apps (e.g., messaging apps) don’t arrive, check that your phone’s memory management or security app isn’t closing the app, and add it to the allow list (whitelist).
【b.race】 Which app should I install? What devices are supported?
1. b.race uses the dedicated b.ring app. Download the “b.ring” app from the App Store or Google Play.
2. For the best experience, always update to the latest version.
3. We recommend a smartphone running iOS 15.6 or later, or Android 8.0 or later.
【b.race】 Does it measure even without a smartphone?
Yes, b.race can store data on its own without a smartphone.
You can leave your phone behind while walking, exercising, or sleeping, and the data syncs when you bring the band near your phone and open the app.
How long data is stored on the band depends on the type:
activity, sleep, and HRV are kept for about 7 days, while heart rate, blood oxygen, and stress are kept for about 3 days, so we recommend syncing with the app regularly.
Note that workout routes (maps) use your smartphone’s GPS, so you’ll need to carry your phone to record them.
【b.race】 Can I track and manage my menstrual cycle?
Yes, you can record and manage your menstrual cycle in the b.ring app.
Enter details such as your period start date, and the app calculates your cycle and shows predicted dates.
Use it as a reference for managing your health and condition.
* This feature is for informational purposes only and is not a substitute for medical diagnosis or advice.
【b.race】 How do I reset the band?
You can reset the band from the app.
Go to My Page > Device Settings > Reset Device.
After resetting, you’ll need to reconnect the band.
【b.race】 Can I share health data with family and friends?
Yes, b.race lets you share health data with family and friends in real time.
1. Send a share request in the app, and once the other person accepts, you can view data such as sleep, steps, heart rate, and blood oxygen together.
2. It’s useful for keeping an eye on the health of family members who live apart.
【b.race】 What health data can b.race measure?
b.race can measure and record the following.
1. Sleep (duration, efficiency, sleep-stage analysis).
2. Steps, distance, activity, and calories burned.
3. Heart rate (real-time and automatic).
4. Heart rate variability (HRV).
5. Blood oxygen.
6. Stress.
7. Workout records (exercise modes, heart rate zones, etc.).
It also offers various health-management features such as Body Rhythm (activity-index suggestions), AI Health Report, and Calorie AI.
* b.race does not support skin-temperature measurement.
* Data collected by this product is for informational purposes only and is not a substitute for medical diagnosis or advice.
【b.race】 What are the AI Health Report and AI chatbot (b.ro)?
The b.ring app offers AI features.
1. The “AI Health Report” predicts your current and future condition based on collected health and activity data and provides personalized advice.
2. You can ask the “AI chatbot (b.ro)” about your heart rate, sleep, activity, and more, and it answers based on your data.
* These features are for informational purposes only and are not a substitute for medical diagnosis or advice.
【b.ring】 Biometric data graphs aren’t visible, or the app’s screen layout is abnormal.
Issues where the app’s interface or graphs appear broken or don’t load are usually caused by temporary data (cache) conflicts inside the smartphone, or app version compatibility issues.
1. Update to the latest version (top priority): Open the Google Play Store or Apple App Store and check that the b.ring app is updated to the latest version. Due to server system overhauls and similar changes, screens may not display properly on older app versions.
2. Fully close and restart the app process: Open the task manager on your smartphone, fully swipe up to close (force-close) the b.ring app, then relaunch it to refresh the screen cache.
3. Submit the error screen: If screens still appear broken or don’t show after the steps above, send your smartphone model (e.g., Galaxy S24, iPhone 15), OS version information, and a capture of the error screen to customer support, and we’ll quickly issue a patch.
【b.ring】 The calories or nutrient values in the AI Diet analysis seem off.
AI Diet analysis is AI technology that estimates approximate nutritional content based on the visual appearance of food photos you’ve registered.
1. Use the manual nutrient correction feature: Photo analysis results may differ from your actual meal due to cooking methods or portion sizes. On the analyzed screen, you can tap directly on calories as well as carbohydrate, protein, and fat values to manually correct them to match your actual intake.
2. Prevent input errors (enter in integers): If, after manually correcting values and saving, the values reset or don’t save properly, try changing the input to integer units (e.g., 151g instead of 150.5g, dropping the decimal).
3. Report data errors: If a common food’s nutrient values are consistently and significantly misrecognized, capture the food name and the nutrient analysis screen and send it to customer support. We’ll reflect it when updating the AI learning model.
【b.ring】 The AI Diet function won’t run, or it can’t recognize food photos.
If the AI Diet analysis function isn’t working properly, you’ll need to check your smartphone’s security permissions and server communication.
1. Check camera and media access permissions: In your smartphone [Settings] > [Apps] > [b.ring] > [Permissions], verify that both “Camera” and “Photos/Media (Gallery)” access permissions are set to allowed. If permission is denied, taking photos or uploading images won’t be possible.
2. Try importing from the gallery (album): If errors occur when shooting in real time with the in-app camera function, first take a photo with your smartphone’s default camera app, then upload the image via “Import from gallery (album)” in the b.ring app.
3. Check your network connection: Image analysis is processed via a cloud AI server, so please try it in an environment with a smooth internet connection (Wi-Fi, or a strong LTE/5G signal).
【b.ring】 The AI report’s analysis content seems different from the actual data.
The AI report is a function that takes the raw biometric data (graphs) recorded in the app and uses AI to interpret your overall condition and convert it into text.
1. Check the original data graphs: First, on the app’s home screen and detail view, verify that the day’s measured raw data graphs (heart rate, sleep time, etc.) are displaying correctly.
2. Data accumulation and learning period: In the early stages when there’s not enough information about your daily patterns, temporary errors in AI analysis can occur. Accuracy improves as more data accumulates.
3. How to report to customer support: If the raw graph data looks completely normal but only the AI report’s summary text comes out as the exact opposite, it may be a data processing error. Capture both the raw data graph screen and the AI report screen for that date and send them to customer support, and we’ll work with the development team to quickly improve the logic.
【b.ring】 The AI report doesn’t appear, or the screen keeps showing as loading.
The AI report is a service generated by detailed analysis on the server based on the user’s biometric data. If the screen isn’t displaying properly, please try the following steps.
1. Verify biometric data sync is complete: AI analysis only begins after the day’s accumulated data (sleep, heart rate, etc.) is 100% synced to the smartphone app. First pull down the app’s home screen to fully complete a manual sync, then check the report.
2. Check network connection: The AI report communicates with the server in real time, so loading may take longer if your cellular data or Wi-Fi connection is unstable.
3. Refresh your account session: Your login information may have temporarily errored. Log out from [My Page] in the app and log back in, then check the screen.
【b.ring】 Firmware update doesn’t progress or stops at a specific point (e.g., 50%).
Firmware updates are a delicate operation that transmits system files directly to the ring via Bluetooth (BLE) communication. If errors occur during the update, set up the following conditions and try again.
1. Ensure sufficient battery: If power is cut during an update, fatal errors can occur on the device. Charge the ring to at least 50% or safely place it on the charging dock so power is supplied during the update.
2. Maintain close proximity and reduce interference: Until the update is complete, place the smart ring and smartphone right next to each other (essentially touching) and don’t move them. Briefly turning off other nearby wireless devices (Wi-Fi, Bluetooth devices, etc.) can reduce wireless interference.
3. Keep the app on screen: While the update is in progress, never close the b.ring app or switch to the background (going to the home screen, opening other apps). If the smartphone screen turns off, communication may be cut off, so keep the screen on.
