features a 0.69 screen, support text incoming call notification, pedometer and sleep monitoring. Features: GENERAL DESIGN: Exquiste Workmanship, unique and beautiful design, lightweight and portable. SMOOTH TOUCH and SWEAT-RESISTANT: Silk Smooth and soft touch on the surface, extreme comfortable grip feeling, anti-dirt, and anti-scratch. SIMPLE OPERATION: 0.69 display, simple operating system. Perfect view angles, easy control KEY, quick in reaction with high sensitivity. EASY CONNECTION: BT 4.0. APP for Android 4.4, IOS7.0 or above. MAIN FUNCTIONS: HEART RATE and PEDOMETER: Record heart rate and sport data from time to time; Anti-lost, Text and call notification, Alarm, sleep monitoring, etc. COMPATIBILITY: for iPhone 6 6S 6 Plus 6S Plus 7 Plus Samsung S7 edge S8. LONG ENDURANCE: low energy consumption, full charge for almost 7 days use 20 days standby. It's just general life waterproof, do not wear it when you swim or bath.