What to do if the blood oxygen saturation measurement on the REDMI Watch 5 Active is slow?

If the blood oxygen saturation measurement on the REDMI Watch 5 Active is slow, please refer to the following methods to solve the issue:
1. Factors such as hair, tattoos, shaking, low temperature, and incorrect wearing can affect the measurement results, and even lead to value failure. Wear the device tightly to the distance from one finger of the wrist bone, and keep it stationary throughout the measurement, which can greatly improve the success rate of the value;
2. To ensure the accuracy of the measurement, please wear the watch correctly, keep the arm flat, keep the watch screen upward, and the watch and wrist skin are comfortably attached. Do not wear it on the wrist joint, and then start the blood oxygen saturation measurement on the watch to keep the arm stationary throughout the measurement;
3. Ensure that the sensor on the back of the watch is clean and dry, and there is no foreign body occlusion;
4. In low temperature environments (such as high altitudes, winter and other low temperature scenes), you can take off the watch, rub the watch parts, and then wear the watch to measure;
5. To make the measurement result more accurate, it is recommended that you wear it for 3-5 minutes before measuring the blood oxygen saturation.