The mi band 4 will have an OLED color screen, support multiple personalized dials, and a 39.9% larger display than the previous generation. The battery capacity will also increase to 135mAh. In terms of functional experience, mi band 4 will support mobile payment.
- Full-color AMOLED touch display – View call, text, and app notifications.
- Activity and swim tracking – Water resistant up to 50m；3-axis accelerometer, 3-axis gyroscope
- Up to 20 days’ battery – A single charge lasts up to 20 days.
- Health monitoring – 24/7 heart rate monitoring and sleep tracking.
- Mi Fit app – Records your health data to help you get the most out of life.