Huawei Band 3
Tech specs 
Size45 mm (span of main body) × 19 mm (width) × 11 mm (maximum thickness of the main body)
Wrist strap: Width: 16.5 mm (after the strap is fully loosened); Length: The long strap is about 120 mm, and the short one is about 92 mm
MaterialMetal frame & soft silicone strap
Battery100 mAh
Battery life20 days for typical use
Water-resistance5 ATM (50 meters)
Weight25 grams
Sensor6-axis acceleration sensor, optical heart rate sensor, Infrared wear sensor
DisplayAMOLED color screen. Resolution: 120 x 240 pixels
Screen size0.95 inches (21.6 mm × 10.8 mm for AA area))
ColorsObsidian Black, Space Blue, Quicksand Gold
Activity tracking 
Calories burnedYes
Heart rateYes
Stress & recovery
Pulse Ox
Respiration rate
UV exposure
Skin temperature
Galvanic skin response
Hydration level
Calorie intake
Running features
Swimming features
Non-fitness functions 
Smartphone notificationsYes
On-board music storage
Connected pay
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