The Xiaomi Watch 2 supports continuous or periodic monitoring of your heart rate throughout the day or during specific activities.
If heart rate data is not accurate, please refer to the following troubleshooting steps:
1. Please ensure the device’s firmware and the Mi Fitness app is updated to the latest version;
2. Ensure that the heart rate monitoring feature is not turned off;
3. Please wear the watch slightly above your wrist bone with the strap fastened tightly but not too tight. Wearing the watch too tightly, raising your arms, making fists, etc. will affect blood circulation, thereby affecting heart rate data;
4. Clean your watch gently to ensure there are not too many sweat stains on it. Too many sweat stains on the bracelet will also affect heart rate data;
5. Check your skin condition. Too dry skin, skin scars, tattoos, etc. will affect heart rate data. Additionally, brown skin and black skin cannot be measured. Darker skin has greater absorption of green light and cannot be detected;
6. Please restore the watch to the factory setting. Keep in mind that this will erase all data on the device, so make sure to back up any important information first.
We hope the above information is helpful. If the issue still occurs, please send us feedback by opening the Mi Fitness app and going to [Profile] >> [Feedback] >> [Other]. After submitting user feedback, please be patient and wait for the future updates.