BIAL-otd Bike Digital LCD Speedometer 14-Function Bicycle Computer Speedo Odometer Waterproof Speedometer Cycle Bicycle Multi-function Wired Cycling Stopwatch Bike Computer One-button cell battery is included Suitable for steel wire wheel bicycles and electric bicycles Easy to install and weather-resistant and Waterproof Current speed, average speed, max speed, miles and kilometers per hour, speed, and distance