CatEye's Fit lets you track your activity whether you're cycling or walking. On your bike it functions as a wireless cyclo-computer and has the important functions like current speed, average speed, distance and time. For use walking, you simply unclip the head unit and toss it in your pocket, activating CatEye's 3-D pedometer sensors that automatically begin tracking your movement. The Fit's large, bright display is easy to read and its functions are easy to access via side buttons. You'll also love CatEye's tool-free Flex-Tight mount for easy bike installation and removal.