stardrift Bluetooth 4.0 Pedometer Smart Wristband Bracelet Sleep Monitor Sports Activity Tracker with Sensitive Touch Button IP65 Waterproof Compatible for iPhone and Android Accurately track all-day stats like steps taken, distance traveled, calories burned, stairs climbed,active minutes and sleep status See daily stats, time of day, and exercise mode with a bright 0.49 inch OLED display Excellent waterpoof reach 3 meters(IP65),Medical healthy TPU material Support vibrate reminder sync mobile such as calls, whatapp, skype, twitter,facebook, WeChat,SMGS,QQ Sensitive touch button,easy to switch and check the datas on the screen