Our Mini speedometers feature a 1.90 inches (48mm) diameter for a minimalistic look. Speed can be set in either miles per hour or km/h. If speed goes over 200, it will be displayed on the LED display. The LED dispay offers the following functions: total distance (odometer), maximum speed, on-board voltage, time. There are also four colored LED's for oil pressure (red), neutral (green), high beam (blue) and turn signals (yellow). Our Mini speedometers can fit in our De Luxe speedo housings, Ring speedo housings and in our Alcatraz speedo housings. Speedo housings are sold separately.