The Fitbit Ultra Wireless Activity Tracker makes every step you take a step toward better fitness, even on your busiest days. It monitors your all-day activity to provide you with real-time feedback on steps, distance, calories burned, and stairs climbed to encourage you to be more active. It even tracks how long and well you sleep. It's so small and discreet, you can wear it in your pocket, on your belt or on your bra. Information is wirelessly uploaded to Fitbit.com so you can gain deeper insight into your daily or monthly fitness and sleep levels with online graphs and charts. In fact, Fitbit users increase their daily steps by 43 percent and have lost an average of 13 pounds.