Have you ever calculated how fast you can drive or how long you drive everyday? May be you want to calculate but you do not have such kind of tool and the traditional watch is not so accurate. If so you should pay special attention to this genuine Sundingf Water resistant bike computer. This wireless cycle computer is so powerful in its functions. It can calculate the current speed the maximum speed the average speed and so on. - Color: Black - ABS housing material - 1.5" LCD display screen - Functions: - SPD current speed - ODO odometer (0.001~99999km/m) - DST trip distance - MAX maximum speed - AVS average speed - TM elapsed time.