2" 52mm Digital GPS Speedometer Odometer Gauge MPH for Motorcycles Boat Car UK
Knot, MPH, km/h units, and automatically save. Indicating Range: 0~999 (MPH, Knots, Km/h adjustable). Switch unit between MPH(Mi), Knots(NMI) and Km/h (KM) by Backside Button. If need to change the Unit KM/H,MPH, Knots, you can try to do.