Is the blood oxygen saturation measurement of Huawei bracelet 4 inaccurate?

1. Please wear the bracelet correctly, keep your arms flat, keep the screen of the bracelet up, and the bracelet fits comfortably with the skin of your wrist (wear it slightly tightly). Don't wear it on the wrist, then start the measurement of oxygen saturation on the bracelet, and keep your arm still during the whole measurement.

2. Ensure that the sensor on the back of the bracelet is clean, dry and free of foreign objects.

3. In low-temperature environment (such as high altitude, winter and other low-temperature scenes), you can remove the bracelet, rub the part where you wear the bracelet to make the blood circulation active, and then put on the bracelet for measurement.

4. Affected by external factors (hairy arms, tattoos, dark skin, drooping arms, shaking arms, etc. ), the measurement result may be inaccurate or the value may not be obtained.

5. In order to make the measurement result more accurate, it is recommended that you wear it for 3-5 minutes before measuring the oxygen saturation.

6. The measurement and test results are for reference only and are not used for diagnosis and medical treatment.