Photos: Fitbit a pocket-size personal trainer

The Fitbit is a new personal-fitness tracking device that can track how many steps you've taken, as well as how long you sleep each night.

Here it is on its docking station, which doubles as a wireless antenna. When users get within 15 feet of the docking station, the device begins to sync up your latest activity to the Fitbit Web site.

Photo by CNET

Caption by Josh Lowensohn