? Y5 fitness tracker can track your physical index, such as heart rate, steps, calories burned, distance.Muti- sport modes to choose as your wish, such as, walking, running, hiking, etc. ? Y5 fitness tracker monitors dynamic heart rate, uploading the real time data of heartbeats to phone app. Also support automatic sleep monitoring, it records deep sleep, light sleep, and awake states. All health data show as a chart, clearly acknowledge your physical fitness status at whole day. ? Supports IP67 waterproof heart rate bracelet,can wash hands, wear in the rain, but cannot swim ? Through plug-in USB charging design, you can always remove the bracelet from wristband, directly charging on the computer, notebook, charge head, etc, which is more convenient way of charging. Supports 7 hours to use, 15 hours for standby, more convenient for daily use ? Record the state of movement at any time, this heart rate bluetooth 4.0 bracelet can record step number, distance and calarie consumption data. Set personal moving goals periodically compare data, make you learn about your daily movement