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- 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 monitoring of heart rate and sleeping – tracking.
- Do not disturb – mode (also works without phone), sound control on tape
- Whether you’re doing high-speed battle rope training or an aerobic battle rope workout, Mi Smart Band 4 will track your heart rate, calories burned and more.
- Accurately tracks light and deep sleep as well as heart rate during sleep to help you adjust your sleep patterns.
- Safeguard your health at all times. Alerts you when your heart rate is too high.