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 order115plus Smart Watch Men Women Fitness Tracker Sport Watch Waterproof Smartwatch Heart Rate Blood Pressure Monitor Smart BandDescription:1.0.96inch OLED large screen, touch control button2.Real-time static/dynamic heart rate monitoring3.Sports & Fitness: Distance, Pedometer, Calorie, Fitness Goal Setting, Fitness Information Sharing4.IP67 Waterproof: waterproof & dustproof, wear it while raining, hand washing without removal5.Call/Message reminder: Vibrate to remind you of incoming call of your iOS & Android phones via connection6.Sleep Monitor: Track and analyze your sleep quality from the moment you fall asleep, to the length of deep sleep you experience.7.Sedentary alert8.Time & Alarm clock9.Anti-lost: alert when phone exceed the range10.Remote Camera: Remotely control your phone camera and extend your selfie distance within 10meters11. function12.Battery level displaySpecifications:Item Size:43x18x12mmWaist Band Size: 245x19.4x12.8mmStrap Material: TPUCharging:USB dire ct chargingColor: Black,Dark Blue,Purple,Red,GreenDisplay:0.96 inch LEDMotor: built in for vibration reminderHeart Rate: can monitor static, dynamicBattery Capacity:45mAh