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Mi Smart Band 4
Step up, live more full color display and heart rate monitor
The all new full color AMOLED touch display that’s 39.9% and larger and brighter than ever before.
Instantly view call, text, app, notifications and music in play. Keep your hands free as your keep up with life.
A Motivational Transformation
Your personal trainer is with you every step of the way.
A Reinvigorated Transformation
Improving your daily energy start with understanding your sleep patterns
Sleep monitoring
Accurately tracks light and deep sleep as well as heart rate during sleep to help you adjust your sleep patterns.
Wristband Alarm
A light vibration gently wakes you up for a more comfortable morning.
Mi Fit App
Records your health data to help you get the most out of life.
24/7 Heart Rate Monitoring
Safeguard your health at all times. Alerts you when your heart rate is too high.
Idle Alerts
Stay active as you get reminders to get up and get moving.
Step up, live more full color display and heart rate monitor
The all new full color AMOLED touch display that’s 39.9% and larger and brighter than ever before.
Instantly view call, text, app, notifications and music in play. Keep your hands free as your keep up with life.
A Motivational Transformation
Your personal trainer is with you every step of the way.
A Reinvigorated Transformation
Improving your daily energy start with understanding your sleep patterns
Sleep monitoring
Accurately tracks light and deep sleep as well as heart rate during sleep to help you adjust your sleep patterns.
Wristband Alarm
A light vibration gently wakes you up for a more comfortable morning.
Mi Fit App
Records your health data to help you get the most out of life.
24/7 Heart Rate Monitoring
Safeguard your health at all times. Alerts you when your heart rate is too high.
Idle Alerts
Stay active as you get reminders to get up and get moving.
| Specifications | |
| Weight | 22.1g |
| Water Resistance Rating | 5 ATM |
| Display Type | AMOLED |
| Screen Size | 0.95" |
| Resolution | 120 x 240 RGB |
| Colour Depth | 24bit |
| Screen Brightness | Up to 400 nits (max brightness), brightness adjustable |
| Touchscreen type | On-cell capacitive touchscreen |
| Screen protection | 2.5D tempered glass with anti-fingerprint coating |
| Button | Single touch button (wake up, go back) |
| Wrist strap type | Removable wrist strap (Mi Smart Band 4 is compatible with Mi Band 3 straps) |
| Wristband width | 18mm |
| Wrist strap material | Thermoplastic polyurethane |
| Adjustable wrist strap length | 155-216mm |
| RAM | 512KB |
| ROM | 16MB |
| Sensors | 3-axis accelerometer + 3-axis gyroscope; PPG heart rate sensor; Capacitive proximity sensor |
| Wireless connectivity | BT5.0 BLE |
| Battery | LiPo, 135mAh |
| Charging Type | 2Pin Pogo Pin |
| Charging time | 2 hours |
| Standby time | Up to 20 days |
| Motor Type | Rotor |
| Body material | Polycarbonate |
| App | Mi Fit |
| System requirement | Android 4.4, ISO 9.0 or above |
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