User's Manual

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SizeandWei ght
•Height
1.89inches (48mm) 
•Width
0.76inch(19.3mm)
•Depth
0.38inch(9.65 mm)
•Wei gh t
0.28oz.(0.02lb,8 grams)
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EnvironmentalCondit ions
TheFitbit Oneisnotwaterproof. It shouldn’tbewornwhile swimming.Itis, however, rain,splash,and
sweat‐ proof.
•Operat ing Temperature
‐ 4° to 113° F (‐ 20°to45° C) 
•Non‐Operat ingTemperature
‐22 ° to 140° F (‐ 30°to60° C) 
•Rela ti ve Humidity
Oneissplash‐ proof,and shouldnotbesubmergedmorethanonemeter.
•MaximumOperatingAltitude
30,000 feet(9,144 m) .
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PC&MacRequirements
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SupportedBrowsers
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Troubleshoot ingandHelp
Troubleshoot ing andassistanceforyourFitbit One trackercan befoundathelp.fitbi t.com.
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