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 multifunction waterproof bike computer. This wireless cycle computer is so powerful in its functions. It can calculate the current speed the maximum speed the trip distance the total distance the average speed and so on. - Model: SD-548C - Small light and easy to install - Multiple functions including: - Wireless transmission - SPD: current speed - ODO: odometer (total distance) - DST: trip distance - MXS: maximum speed - AVS: average speed - TM: elapsed time - CLK: clock (12/24-hour format) - Scan: screen display varies among DST MXS AVS and TM every 4 seconds - "+"/"-" comparator - Setting speed scale (km/h and m/h) - Setting tire circumference - Setting the last value of odometer - Freeze frame memory - Auto on/off - Package included: - 1 x universal sensor transmitter bracket - 1 x bike computer console - 1 x mounting shoe - 1 x wheel magnet - 1 x 3V 2032 battery for bike computer - 1 x 23A 12V battery for sensor - 1 x User manual (Chinese) - 1 x set cable tie