Xiaomi Mi Band 3
Tech specs 
Size17.9 x 46.9 x 12mm
MaterialSilicone
ChargingUSB
Battery110 mAh lithium ion
Battery life20 days
Water-resistance50 metres (5 ATM)
Weight20 grams
SensorAccelerometer, optical heart rate sensor
DisplayOLED
Screen size0.78-inch
ColorsGraphite Black, Hot Orange and Deep Blue
Other
Activity tracking 
StepsYes
DistanceYes
Calories burnedYes
ActivityYes
Floors
SleepYes
Heart rateYes
Stress & recovery
UV exposure
Skin temperature
Galvanic skin response
Hydration level
Calorie intake
GPS
Running features
Swimming features
Other
Non-fitness functions 
Smartphone notificationsYes
On-board music storage
Connected payYes
LTE
Links 
Affiliate link*Amazon
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