Like a thumb-drive for fitness powered by sophisticated 3-D motion sensor technology, the FitBit Tracker counts steps taken, calories burned and quality of sleep, conveying this data in the blue glow of an OLED display. FitBit is a miniature wireless tracker that clips easily to clothing, complementing any outfit. With its own web account, this wellness device paints a vivid digital picture of overall activity as well as automatically uploading data of its wearer's movements for easy tracking of progress over time.