Blusmart Bike Computer Bicycle Speedometer With Waterproof Touch Mode 22 Functions Large Screen Display with Green Backlight Wired LCD Smart Bike Odometer Touch Mode allow you to control the bike computer by gently touching. Just like control your iPhone by finger, now youre allowed to control a bike computer by gently touching during riding without pressing forcefully. Large LCD Screen Display with green backlight allow you to read the digital easily remotely, especially in the deep dark night or in the long tunnel. Only one touch on the MODE or SET will turn on the backlight. Convenient and Fast to record the speed and mileages without any delay. Just one touch when you start ride again, this bike computer will record your riding directly at any time. 22 Function to meet your different riding needs. This bike computer not only can record your riding data like Speed comparing, Average, Maximum, Relative, Riding time, Riding distance, but also can record calorie and fat you consumed, temperature, stopwatch and so on. Waterproof design makes it more durable. The outline of the bike computer is simple and cool, whats more with the waterproof design, it will always keep in fashion and new.The sensor wire measurement is 33 inch. Teaching Video Link:https://www.youtube.com/watch?v=Pfskqo6KO-M&feature=youtu.be