The Bestdeal Smart Sport Bluetooth Silicone Bracelet,Healthy Assistant Bluetooth 4.0 Sports Intelligent Wearable Bracelet Waterproof Stopwatch Anti-lost Warning Passometer Sleep Monitor for Android and Iphone (Black Color) This fantastic Bluetooth bracelet supports sport, sleep monitor, NPA and calorie consumption tracking functions, etc. Phone supports Android 4.3,iOS7(or later) Supports pedometer, NPA and phone camera control Tracks your sleeping quality and movement distance;Shows your calories consumption, great for swimming, walking and running. Daily Water proof, Ultra-long standby time, Low radiation