Dear friend, our product comes in two styles: Model A: (115plus smart bracelet) Available in five colors, Function: App: Hryfine, Product size: 43x18x12mm, Belt size: 245x19.4x12.8mm, Charging: USB direct ct charging, Charging time: approximately 1-1.5 hours, Support for Android and iOS phones, Operating system requirements: Android 4.4 and above, iOS 7.1 and above, Bluetooth 4.0 Data storage: can store 7 days of exercise data. Option B: (M8 Smart Watch) Available in five colors. Function: APP: fitpro. Compatible system: Android 5.0 (or above), IOS 8.0 (or above), Bluetooth 4.0, charging method: USB. Pay attention to options when placing an order 115plus Smart Watch Men Women Fitness Tracker Sport Watch Waterproof Smartwatch Heart Rate Blood Pressure Monitor Smart Band Description: 1.0.96inch OLED large screen, touch control button 2.Real-time static/dynamic heart rate monitoring 3.Sports & Fitness: Distance, Pedometer, Calorie, Fitness Goal Setting, Fitness Information Sharing 4.IP67 Waterproof: waterproof & dustproof, wear it while raining, hand washing without removal 5.Call/Message reminder: Vibrate to remind you of incoming call of your iOS & Android phones via connection 6.Sleep Monitor: Track and analyze your sleep quality from the moment you fall asleep, to the length of deep sleep you experience. 7.Sedentary alert 8.Time & Alarm clock 9.Anti-lost: alert when phone exceed the range 10.Remote Camera: Remotely control your phone camera and extend your selfie distance within 10meters 11. function 12.Battery level display Specifications: Item Size:43x18x12mm Waist Band Size: 245x19.4x12.8mm Strap Material: TPU Charging:USB dire ct charging Color: Black,Dark Blue,Purple,Red,Green Display:0.96 inch LED Motor: built in for vibration reminder Heart Rate: can monitor static, dynamic Battery Capacity:45mAh