Size:Approx.7.3x4.5x1.6cmColor:GreenMaterial:Plastic+ABSEasy installation, no tools required. Powered by CR2032 battery, Intelligent light control function - No matter day or night, if you go to a dark place, press any key will light 5 secondsTwo kinds of backlight - Constant backlight: press MODE button for 5 seconds to open, then press 5 seconds to close; Auto backlight: Press any key to light 5 seconds, Durable and water-resistant character can be use in all conditions.
It works well to Measure Speed ,Distance, Riding time and other,which the serious bicyclist or fitness fanatic wants to go with knowing.
Easy installation, no tools required. Powered by CR2032 battery, Intelligent light control function
ADream Multifunctional Touch Screen Bicycle Meter Waterproof Mountain Bike Stopwatch Bicycle Speedometer Green VCIGVINSJ