This new type of multifunction bicycle-odometer can display all information about the riding speed, mileage and time dynamically when riding. It also includes the function of thermometer, clock and stopwatch. Real-time display helps track speed, distance, time, and multiple datas instantly. Auto backlight function, it will automatically turn on/off backlight when sunset/sunrise. IPX4 water resistant allows for riding in rainy days. Easy installation, and good durability. Provided mounting accessories for different demands. Powered by a CR2032 battery (included).