Sahoo V-Share Bike Wire Computer Speedometer Waterproof 14 Functions in Black 14-function wire cycle computer Waterproof Functions: Speedometer, Odometer, Tripmeter, Auto-timer, Maximum speed, Different speed, Average speed, Stopwatch, 24-hour clock, Scan function, Km/Mile selection, Auto/Manual Timer selerction, Wheel size input, Power saving function Easy to install and use