Tech1

The Xiaomi Mi Band 3 is a wearable activity tracker produced by Xiaomi Inc. It was released on 31 May 2018. It has a capacitive OLED display. The tracker features heart rate monitoring, although it does not offer continuous heart rate display. Specifications: Display: 0.78 inch OLED, single point touch screen. Resolution: 128 x 80 pixels. Button: capacitive. Connectivity: Bluetooth version 4.2 BLE; NFC on some models. Size: 46.9 x 17.9 x 12 mm. Weight: 20 g. Casing: plastic + alloy. Battery capacity: 110 mAh for 20 days of battery life. Sensors: accelerometer, optical heart rate monitor. SoC: Dialog Semiconductors 14681, clock rate 32 kHz up to 96 MHz. Waterproof: up to 50 metres, 5 atmospheres.