PAI is a scientifically-validated metric that provides insight into how your exercise is contributing to your health. PAI turns your heart rate data into a single, personal score, showing you how much activity you need to stay healthy.

Huami's BioTracker™ PPG offers advanced full-scale heart-rate monitoring with a unique low-power consumption technology. It also provides functions such as vibration alerts on heart rate much too high or out of heart rate range while exercising.

Used in Huami's flagship smart watch products, Huangshan-1 enabled 24X7 health monitoring functionality, and significantly improved the efficiency of atrial fibrillation detection by 200% compared with non-AI chips.

An electrocardiogram (also called an ECG or EKG) is a test that records the timing and strength of the electrical signals that make the heart beat. By looking at an ECG, a doctor can gain insights about your heart rhythm and look for irregularities.