Please charge to activate the bracelet, then fully charge it before using, it takes about 1.5 hours.
1.Sport: real-time dynamic heart rate monitoring, high power consumption( about 2 days)；
Intelligent: detect heart rate once per 10 minutes, less power consumption( about 4 days)
Off: about 7 days
Touch the purple point on the cover and stay for 0.5 seconds, screen light up.
Repeat this action to switch display content.
Remark: the heart rate data is only for reference, can not used for medical purpose, its data may be inaccurate in follow situations: sweating wrist, too tight or loose wearing, heavy hand hairs or dark skin