Track steps, floors climbed, distance, calories burned & active minutes
Daily activity stats will automatically sync to your phone, tablet or computer
See daily stats & time of day on the OLED display
Clips comfortably to your belt, pocket or bra
Monitor how long and how well you sleep & wake with a silent alarm
Enjoy 14 days of battery life before having to recharge*
View your progress and analyze your trends with
easy-to-read charts and graphs
Invite friends and family to share stats, send cheers
& taunts, & compete on the leaderboard
Log food fast with a calorie estimator, meal shortcuts & expanded food database
Log workouts, see a monthly exercise calendar, & use MobileRun to track run stats and map routes
Get goal progress notifications & celebrate
fitness milestones with badges
Set sleep goals, review sleep quality
& see weekly sleep trend graphs
We recommend charging your One weekly to ensure you are always tracking.
One is sweat, rain and splash proof. However, the device is not swim proof. With any clip-based wearable device, it’s best for your skin if the clip stays dry and clean.
You can clip One to a belt, pocket or bra. Always use the silicone holder when clipping it to a bra or waistband as the plastic One tracker is not meant to be worn in direct contact with the skin. Make sure the One display faces outward when clipped to your bra. Learn more
The One tracker is made of thermoplastic. The clip is made of silicone and metal.
One syncs automatically and wirelessly to tablets, computers and 200+ leading iOS, Android and Windows smartphones using Bluetooth 4.0 wireless technology.
We recommend charging your One weekly to ensure you are always tracking.
One syncs automatically and wirelessly to tablets, computers and 200+ leading iOS, Android and Windows smartphones using Bluetooth 4.0 wireless technology.
*Your fully charged Fitbit One has a battery life of up to 14 days. Note that battery life and charge cycles vary with use, settings and many other factors; actual results will vary.