2. The data cannot be used as medical reference.please don't buy for check the health (heart problem, blood pressure problem) its not for professional use
3. IP67 Waterproof: Do not wear it while diving and take shower. The smart bracelet is waterproof when its lens and case are intact.
4.R11 smart bracelet will automatically recognize your state and analyse your sleep quality in the whole process like the time to fall asleep, the time of deep sleep and shallow sleep. It can also provide your monthly sleep quality report.
5.R11 smart bracelet is not medical use, it is a fitness tracker intelligent wristband. just for you more science to keep fit your body,don't use for body check.