How to measure heart rate with millet 1 1ultra?

Like Xiaomi 1 1, Xiaomi1/ultra is equipped with Ding Hui's ultra-thin screen optical fingerprint scheme, which can also support the function of detecting heart rate by fingerprint. How does Xiaomi 1 1ultra measure heart rate?

How does Xiaomi 1 1ultra measure heart rate? 1. Open Xiaomi Health APP on the mobile phone desktop.

2. Gently press the unlocking area 15s with your finger.

3. Heart rate data can be measured on the mobile phone.

Taking Xiaomi 1 1ultra as an example, this paper is suitable for Xiaomi Health V2. 12.5 MIUI 12 system.