Sensor and module Heart rate sensor: Photoelectric heart rate sensor Bluetooth chip: top Nordic Bluetooth chip (Bluetooth 4. 0) Sensor: advanced KIONIX sensor App OS IOS 7. 1 and above / Android 4. 4 and above Functions Pedometer, Distance, Calorie, Sleeping Monitor, Multiple Sports Modes, Alarm Clock, Remote Camera Control, Sedentary Alert, In-coming Call Alert, Heart Rate Monitor Multiple Sports 15 Sorts of Sports Modes: Running, Walking, Cycling, Swimming, Yoga, Hiking, Climbing, Rope Skipping, Basketball, Badminton, Tennis, Football, Treadmill, SPINNING, Dancing Display Screen display: 0. 96 display Screen type: OLED Operation method: single touch/full touch Waterproof and Dustproof Life waterproof(sweat proof, dustproof) Strap Material Strap Size and material: 2401611mm and TPU+TPE Strap colour: Black, Blue, Red, Green, Purple. Battery specification Battery type: lithium-ion polymer battery capacity: 65 mAh Duration: 15 days Charging ways: USB charging time: 1-2 hours Storage Record 7-day detailed sports and sleep data. Record personal sports data per week, month and year. Standard Packaging 1 x smart bracelet, 1 x user manual, 1 x packing box.