Features: IP67 waterproof. S2 can be weared to swim. (depth not over 1m, time not over 30mins) Sports and Health: sports tracking (Pedometer, distance,calorie) sleep tracking (sleeping time, sleeping quality) set fitness goals movement pattern (Swimming mode, Bicycle-riding mode, Runningmode, Ropeskipping, Sit-ups, Jumping jacks). GPS movement Trajectory, distance, Time, Pace, Calorie, Historical records, track sharing. Real-time dynamic heart rate monitoring. Alert & Notification function: call reminder (Android, iOS), contact name display; Facebook, Twitter, Line, SKYPE, WhatsApp (Android, iOS), content display; Sedentary; Anti-lost warning; Clock alarm; Task alert. Smart buttons Find phone: Camera remote, Music remote, Video remote. Wake up screen by turn wrist Built-in 90mah Lithium-ion polymer rechargeable battery,can be used about 10 days. Compatible with Android 4.3 and above, IOS 7.0 and above, with Bluetooth 4.0 Phone. APK Name: SmartWristBand. APK Language: Simplified Chinese, traditional Chinese, English, multi language. Specifications: CPU: BT V4.0 BLE Display: 0.96 inch, 64*128 Acceleration: 3-axis G-sensor Heart rate: Dynamic heart rate detection Battery: 90ma Lithium-ion polymer rechargeable battery Motor: Built-in,remind with vibration Font: Full character display Charge: 5V USB jack,charge by PC USB Water-proof level: IP67,Swimming (depth not over 1m, time not over 30mins) Using time: about 10 days Data Sync: data synchronization to mobile app Data storage: Storage 7 days' sports data Compatibility: Support IOS 7.0 and above, Android 4.3 and above