• Color: Midnight Black, Flamingo Pink, Sage Green
• Size(Square): 40.5 x 35.8 x 8.95 mm (without sensor base)
• Weight: 19.5 g (without strap)
• Body: Aluminum alloy
• Bottom shell: Plastic
• Button: 1 button
• Waterproofing Grade: 5 ATM
• Screen Material: AMOLED
• Size: 1.55 inches
• Resolution: 354 x 306
• PPI: 301
• Battery Capacity: 220 mAh (typical value)
• Charging Method: Charging base
• Charging Time: About 2 hours

Typical Usage Battery Life: 14 days.
(Heart rate is always on, sleep monitoring enabled. 150 pushed messages a day lighting up the screen display, raise wrist to see watch time 30 times, bright screen operations for 5 minutes; exercise 3 times a week, GPS running for 30 minutes.)

Basic Usage Battery Life: 21 days.
(Turn off the Bluetooth connection, heart rate and other functions of the phone, and only lift the wrist to turn on the screen 100 times a day.)

Heavy Usage Battery Life: 7 days.
(Heart rate is always on. Sleep monitoring and sleep breathing quality monitoring and stress monitoring enabled. However 150 pushed messages a day lighting up the screen display, lift the wrist 100 times, bright screen operations 15 minutes. Exercise 3 times a week, GPS running for 30 minutes.)

Sensors:
Health Huami self-developed | BioTrackerTM 2 PPG (support blood-oxygen) biological data sensor.

Movement
Acceleration sensor, Gyroscope sensor
Geomagnetic sensor, Ambient light sensor
Vibration Motor.

Connection: Bluetooth 5.0 BLE
Strap: Material, Silicone
Width: 20 mm
Clasp: Classic pin buckle