- Activity tracker
- 0.28 oz
Fitbit's trackers are all day activity trackers that offer Bluetooth Smart connectivity, so you see your stats in real-time. Syncing occurs automatically any time the One is within about 20 feet of the wireless USB dongle and is relatively motionless. The dongle plugs into your Mac or PC's USB port. Syncing and uploading require use of the Fitbit uploader application.