Why is the heart rate inaccurate on the Xiaomi Watch S4 41mm when swimming?
If the heart rate is inaccurate on the Xiaomi Watch S4 41mm when swimming, please refer to the following information:
1. During swimming, if the strap is worn too loosely, gaps between the Xiaomi Watch S4 41mm and your skin can allow water impact to interfere with the sensor, leading to weaker PPG signals and less accurate heart rate measurements.
2. To ensure data accuracy, it is recommended to tighten the strap properly, leaving just enough space to fit one finger between the strap and your wrist. This helps ensure the sensors on the back of the watch maintain close contact with your skin.
3. During swimming, rapid arm movements or splashing can cause temporary inaccuracies in heart rate measurements, as the sensor can not be able to completely compensate for motion and water interference.
4. This behavior is normal for optical heart rate sensors during water-based activities and does not indicate a hardware issue.
Does it help?
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