Features:[1.3 Inch HD Display] 1.3 inch HD screen displays your colorful image at resolution of 240*240. Designed with quick release bar, the 20mm strap is detachable for easy installation and remove.[Health Monitor] Monitor and feedback your physical changes of heart rate, blood pressure and sleep via precise sensor and optical algorithm.[Multiple Workout Modes] Accurately tracks your different activities like walking, running, cycling, skipping, badminton, basketball and football.[Smart Reminder] Provides reminders of social app notifications, calls, SMS, alarm clock, drink water, take medicine, sedentary and more.[IP68 Waterproof] Protected from immersion in water with a depth of more than 1 meter for over half an hour. All right to wear it for daily use or outdoor exercise.Note:Do not wear it when taking hot shower or sauna.Parameters:Screen Size: 1.3 InchResolution: 240*240 dpiBT: BT4.0Compatibility: Compatible with Android 4.4 or later, iOS 8.0 or later.Battery Capacity: 180 mAhApp: DafitFunctions: Heart Rate/Blood Pressure/Sleep Monitor, Pedometer (steps, calories, mileage), Stopwatch, Notifications Reminder, Alarm Clock, Remote Shutter, Event Reminder (sedentary/drink water/take medicine/meeting).Specifications:Case Material: Zinc AlloyColor: Black / Red / Grey / Yellow (optional)Strap Material: SiliconeCase Thickness: 10.6mm / 0.41inStrap Width: 20mm / 0.78in (detachable)Water-Resistant Watch: IP68Item Weight: 59g / 2.08ozPackage Size: 13.7*7.6*3.5cm / 5.39*2.99*1.37inPackage Weight: 150g / 5.29ozPacking List:1 * Watch1 * Charging Cradle1 * User Manual