Slim and light, the Xiaomi Miband 2 OLED Display Heart Rate Monitor Bluetooth Smart Wristband Bracelet can do a lot more than you can imagine. It can function as fitness tracker, sleep monitor, pedometer and call reminder etc. The pedometer keeps track of your daily activities and calculates calorie burned, helping you promote a healthy lifestyle. You can also set your own fitness goals to monitor your progress. Sleep monitor records your sleep patterns and analyzes your sleeping quality. It can normally run on both Android and iOS devices. Why not take a try?