Xiaomi Mi Smart Band 4

The Xiaomi Mi Smart Band 4 (Xiaomi Mi Band 4 in China) is a wearable activity tracker produced by Xiaomi Inc released in China on 16 June 2019,^[2] in Europe on 26 June 2019^[3] and in India on 19 September 2019. It is 39.9% larger than its predecessor, has a super capacitive AMOLED display and features 24/7 heart rate monitoring.

Xiaomi Mi Smart Band 4

Developer	Xiaomi
Manufacturer	Anhui Huami Information Technology Co. Ltd
Product family	Mi Band
Type	Activity tracker, Watch
Generation	4
Release date	11 June 2019 (2019-06-11)
System on a chip	Dialog DA14697 [1]
Memory	512KB
Storage	16MB
Display	0.95 inch AMOLED
Connectivity	Bluetooth 5.0 BLE NFC in some models.
Power	135 mAh
Weight	22.1 g
Predecessor	Xiaomi Mi Band 3
Successor	Xiaomi Mi Smart Band 5
Website	Official website

Specifications

Specifications:^[4]

• Display: 0.95 inch AMOLED, full color touch screen;
• Colour depth: 24bit;
• Screen brightness: Up to 400 nits;
• Resolution: 120 x 240;
• Button: Single touch button (wake up, go back);
• Connectivity: Bluetooth version 5.0 BLE; NFC on some models;^[5][6]
• Mass: 22.1 g;
• RAM: 512KB;
• Storage: 16MB:
• Battery: LiPo, 135mAh, 20 days of battery life;
• Sensors: accelerometer, gyroscope, PPG heart rate sensor, capacitive proximity sensor;
• Waterproof: up to 50 metres, 5 atmospheres

See also

• Xiaomi
• Xiaomi Mi Band
• Xiaomi Mi Band 2
• Xiaomi Mi Band 3
• Xiaomi Mi Smart Band 5