The all new Rebel from NiteRider takes cycle computers in a new direction. We've removed the clutter and confusion often associated with cycle computers. The large, easy to read display, along with simple, user friendly buttons, make using the Rebel a breeze. From the Rebel 1.0 to the 8.0, all five Rebel models feature a back light an industry first. More serious training features can be found on our 2.4GHz digital wireless models, including a power meter, altimeter and heart rate monitor. An innovative mounting bracket allows for quick tool free mounting to nearly any handlebar or stem. From the heavy duty wired Rebel 1.0 to the 2.4 GHz Digital 8.0 we have a cycle computer to fit your needs. The Rebel, from the company you've come to trust for your cycling electronics. ENVIRONMENTAL FUNCTIONS:1224 hr clock. Backlight. Auto sleep. Low battery indicator. Temperature FC. Altimeter. Power Meter. DISTANCE FUNCTIONS: Total distance. Trip distance. Elapsed ride time. 2 Wheel settings. SPEED FUNCTIONS: MphKph. Current speed. Maximum Speed. Average speed. Auto Start. Actual to average. speed comparison.