What to do if the oxygen saturation measurement on the Xiaomi Smart Band 9 is very low?

For your reference, please check the following methods:
1. Incorrect wearing position. Due to less blood vessel distribution at the wrist, the blood oxygen value is not easy to measure. Please wear the band around your wrist about one-finger's width away from your wrist bone;
2. Wearing too loose. Please wear the band tightly (there is a slight sense of urgency and the band does not move when you shake your wrist);
3. Please stretch your arm and open your elbow joint to avoid inaccurate measurements due to poor blood flow caused by squeezed blood vessels;
4. Place your arm on a stable place such as a table for measurement. Keep the screen of the band facing upwards to avoid an unstable signal due to shaking;
5. It is recommended to move the wearing position of the band to ensure that the back of the band fits the wrist. It is recommended to measure again after keeping it still;
6. The latest version has been optimized. Please upgrade to the latest version to further experience this function.