What is Blood Oxygen?
Blood oxygen, or oxygen saturation (SpO₂), refers to the percentage of oxygen in your blood — essentially, how much oxygen your blood is carrying.
In general, 95% or higher is considered normal, while lower readings may be related to temporary breathing changes, fatigue, stress, smoking, or high altitude.
It’s also common for blood oxygen levels to drop slightly during sleep.
This is a natural biological response — if levels recover within a short period, there’s no need to worry.
However, if you experience heavy snoring or sleep apnea, your blood oxygen may appear lower during sleep.
Q. My readings seem low. Should I be worried?
A temporarily low reading doesn’t necessarily mean a health issue.
Lower values may occur due to temporary breathing changes, fatigue, stress, smoking, or high altitude.
Also, the G2 / Pro models have higher sensor sensitivity, so measurements may appear lower because they’re more precise — not because your health has changed.
It’s best to look at overall trends rather than single readings.
Q. My readings look different from usual.
Try the following steps.
- Make sure the ring fits snugly on your finger.
- The sensor should face your palm for optimal accuracy.
- If you’re using a G2 / Pro model, try Sensor Calibration (Go to: My Page → Smart Ring Settings → Sensor Calibration).
- Warm your hands if they’re cold — low blood flow can affect readings.
- Clean the sensor area before putting the ring back on.
Q. My blood oxygen isn’t measuring automatically.
- For G2 / Pro models: Re-enable automatic measurement mode, or perform Sensor Calibration (My Page → Smart Ring Settings → Sensor Calibration).
- For G1 models: Check that Bluetooth is connected stably and the app can run in the background.
If the issue continues, please reach out to us for further help.
Q. Why are my readings different from a medical device?
b.ring is a wellness device, not a medical device. Readings may vary due to sensor placement, lighting, or wearing conditions.
It’s designed for everyday health tracking and condition awareness, but not intended for diagnosis or medical treatment.
Differences from medical-grade equipment are possible — please use your readings as a reference for general wellness.
If your levels remain low or you experience discomfort, please consult a healthcare professional.