FitStep Heart Rate Monitor Waterproof Bluetooth Smart Fitness Tracker Wristband,Silicone Wristband,Calorie and Step Counter,Call Notification for Android iOS Ip67 waterproof and dustproof: not only can prevent dust, or even wear it in the shower or swim. High Battery capacity: charge for 1 hour, you can Use 7 days, charge for 2 hours, use 15 days. sleep monitor: Strive to get a better sleep by recording your daily sleep time and sleep quality. Plus Use the alarm clock to make sure you're never late to your next important appointment! sedentary: let this monitor help you stay active with the Special sedentary reminder feature. Set your desired time and fit idea will remind you to stand up and be active! sedentary: let this monitor help you stay active with the Special sedentary reminder feature.