Wireless bike computer with 21 functions, suitable for all fork sizes, waterproof sensor, current speed, current rpm, 12hr AM/PM or 24hr clock, riding time, trip distance, average speed, average rpm, maximum speed, maximum rpm, scan, odometer (bike 1 and 2), all riding time (bike 1 and 2), all pedal revolutions (bike 1 and 2), total odometer (bike 1 and 2), total all riding time (bike 1 and 2), total all pedal revolutions (bike 1 and 2), speed pacer, el back-light function, temperature, lap function (10 sets), low battery indicator.