1, Wearable devices monitor human activities through electronic sensors. They are at the level of consumer electronics. It's normal to have certain deviation. Users should treat these datas objectively. Please do not compare it to hospital equipment, which is NOT a medical device!
2, Before using, scan the QR code on the manual to download the APP and connect it to the watch in APP.
3, Please do not wear it to take a bath. Please do not put it in water