52mm GPS Speedometer Gauge MPH Kmh Knots Waterproof LCD For Car Motorcycle Boat
Indicating Range: 0~999 (MPH, Knots, Km/h adjustable). -Switch unit between MPH(Mi), Knots(NMI) and Km/h (KM) by Backside Button. “UNIT”(switch unit between km/h, mph or knots). After selecting “UNIT”, the LCD will show km/h, mph or knots.