ECG Heart Rate Sports Smart Wristwatch

1.72 inch HD retina screen, 356*400 resolution high
resolution screen.
ECG+PPG dual ECG monitoring just to care about your physical and mental health(for reference only, not as a medical standard).
24 hour heart rate monitoring caring heart health expert.
Multiple exercise modes, 24-hour blood oxygen, heart rate, and sleep monitoring, IP68 waterproof.