No Need USB Cable Any More: Package doesn’t include the USB cable. Built-in USB design be charged with any USB port. 1.5 hours charging can last for 5-7 standby. Dynamic Heart Rate and Auto Sleep Monitor: 24-hours automatically to track your heart rate. Auto sleep monitor can record deep, light, awake time and analyze whole sleep time. You can better plan your workout duration and intensity. Achieve fitness goals Personal Health Manager: Track your workout, record your daily steps, distance and calories burning, etc. You can set up to 10 alarms and switch on Call alert and SNS alert in the app to receive it. Support Vertical and Landscape display mode. SMS real-time reminder： Once connected with app, fitness tracker will vibrate and display the message content so that you will not miss important messages and calls, When a mobile phone has an incoming call and a text message. Only for Android or iOS Smart phone: Cannot work with tablet or laptop. Only for Android 4.4 or iOS 7.1 or above. Download the app “Very fit Pro”and connect the fitness tracker with app.