The Fitbit device accurately tracks your calories burned, steps taken, distance travelled and sleep quality. The Fitbit contains a 3D motion sensor like the one found in the Nintendo Wii. The Fitbit tracks your motion in three dimensions and converts this into useful information about your daily activities. Anytime you walk by the included wireless base station, data from your Fitbit is silently uploaded in the background to Fitbit.com
Android, iOS, Web.