Large and elegant dial display: allows you to more easily and quickly see the time, day of the week, date, steps and calories burned; your message notifications can also be displayed directly on the device screen. Heart rate monitoring and sleep tracking: Automatically monitor your daily heart rate in real time and track your sleep quality to better understand your health. All-day physical activity tracking: Accurately record your exercise data, such as: steps, distance traveled, calories burned, active minutes, and accumulated data by week / month. You can also see your fitness goals at a glance, making it easy to control your own rhythmic movement can help you adapt and make the movement as effective as possible. Use the built-in device to quickly get news and information, check the weather, set timers and alarms, control smart home devices, and all other operations through sound. When your phone is nearby, receive call, text, calendar and smartphone app notifications; Also, send quick responses.