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.