Monitor your sleep and wake you up without disturb others: This exercise monitor will monitor how long and well you sleep, and wake you up only (not your partner) with a silent vibration.
Fitness bracelet tracker: This smart wristband fitness tracker can alert you when you long time in sitting or motionless, and track your daily activities such as steps,distance and calorie consumption .
IP67 Waterproof sports bracelet that can be immersed in water for up to 30 minutes at a time.You can wear it freely in shower and washing.
Long time standby, charge one time 1-2 hours by USB and can work one week time.
Warranty: 30 days money back and 12 months exchange to new device if any quality problem.