What to do if the lens of the heart rate sensor on the Redmi Watch 5 Lite is cracked?

The lens of the heart rate sensor is made of polycarbonate with high light transmission performance.
To solve the issue, please refer to the following details:
1. Some chemicals have corrosive and destructive effects on it. In daily use, avoid chemicals such as perfume or cosmetics from touching the heart rate lens;
2. If accidentally touched, it needs to be cleaned with clean water at room temperature in time before wearing;
3. If the lens of the heart rate sensor has cracked, it will affect the accuracy of heart rate detection, blood oxygen detection, and wear detection.
Note:
If the heart rate sensor does not work, please refer to the following details:
1. Please wear the watch about one finger away from the wrist bone. Wearing it too loosely will affect the accuracy of heart rate monitored;
2. Please ensure that the heart rate sensor at the bottom of the watch is in direct contact with the skin, and there is no dirty obstructing the heart rate sensor.