1. Heart rate monitor 24 hour heart rate monitor and detailed heart rate data report help you to improve your health status 2. Activities track daily activities, check real time daily exercise, progress, and calorie consumption 3. Auto sleep monitor & alarm automatically track user deep sleep, light sleep and awake sleep data, and wake you up during best hour set consumption 4. Call alert display: Caller name or caller id on oled screen 6. Long standby: Standby as long as 5-10 days, longer standby than the similar devices with same battery in the market 7. Wrist sense: When lift the wrist and rotate 90 degree, the screen display will light on automatically, it is easy and convenient to check time 8. Tap switch: Tap the tap key on the screen to switch to different function modes.