Fitbit Surge
Tech specs 
SizeSmall size fits wrists 13.9cm-16.0cm
Large size fits wrists 16.0cm-19.8cm
X-large size fits wrists 19.8cm-22.6cm
MaterialStainless steel casing, elastomer strap
Battery lifeup to 7 days
Water-resistanceWater resistant up to 50 metres (5 ATM)
Weight32 grams
Sensor3-axis accelerometer, Altimeter, Optical heart rate monitor, 3-axis gyroscope, GPS, Compass, Ambient light sensor, Vibration motor
DisplayTouchscreen monochrome LCD
Screen size20.88 x 24.36 mm
ColorsBlue, Tangerine, Black
Activity tracking 
Calories burnedYes
Heart rate24/7
Stress & recovery
UV exposure
Skin temperature
Galvanic skin response
Hydration level
Calorie intake
Running features
Swimming features
Other Clock, auto sleep detection, silent wake alarm,multi-sport, auto exercise recognition, music control
Non-fitness functions 
Smartphone notificationsYes
On-board music storage
Connected pay
Affiliate link*Amazon | Fitbit
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