active minutes, heart rate, and stationary vs. active hours) as well as sleep stages,
SmartTrack activity, and exercise data.
We recommend syncing your watch at least once a day.
Display
Ionic has a color LCD display.
Wristband size
Wristband sizes are shown below. Note that accessory wristbands sold separately
may vary slightly.
Small wristband
Large wristband
Environmental conditions
Operating Temperature
Non-operating Temperature
Water Resistant
Maximum Operating Altitude
Learn more
To learn more about your watch and dashboard, visit http://help.fitbit.com.
Fits a wrist between 5.5 and 6.7 inches in circumference
Fits a wrist between 6.7 and 8.1 inches in circumference
14° to 113° F
(-10° to 45° C)
-4° to 14° F
(-20 to -10° C)
113° to 140° F
(45° to 60° C)
Water resistant up to 50 meters
30,000 feet
(9,144 m)
68
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