Are you Sports Freak then try this Fitness Band, Fully compatible with almost all smartphones (Android and IOS system). Multi-functional Fitness Tracker : Accurately track your steps, calories burnt, sleep quality and heart rate. With the green light detector and precision optical sensor, the heart rate monitor measures the heart rate sure at the top of the hour automatically. Fashionable Design and Adjustable Strap: 0.96 inches OLED HD Display screen with slim strap for people to wear in different situation. Record daily walking, distance and calories consumption. Sleep monitor & Alarm: Automatically track your sleep quality, and alarm silent vibration will wake you up. Support SMS & Social network site alert. Note: You should allow the notification of the apps in the phone and app. Bluetooth: Bluetooth V4.0 Touch Screen: Battery: 90mAh Li-on Battery Standby Time: 160 hours Charging duration: 1-2h Sensor: Three-axis acceleration sensor. Download the APP “ Wearfit" in order to enjoy all features.