Bike Computer, Wireless Bicycle Speedometer Bike Odometer Cycling Multi Function with Sensitive Touch Invisible Buttons Muti Functions: Speed Comparator & Average Speed & Maximum Speed & Relative Speed & Riding Time & Riding Distance & Total Riding Distance; Offer accurate riding data for your riding life Speedometer with large LCD display & backlight, easy to read LCD display, ideal companion for your bicycle Waterproof: Riding in a rainy day is ok, but not soak in water or put in rainstorm for a long time. Comfortable and User friendly Suitable to all types of bicycles: road cycling, mountain biking, folding bike, common bicycle Sensitive touch invisible buttons, Large LCD Display: 30mm x 40mm