52mm Digital GPS Speedometer Odometer Gauge MPH Km/h Knots For Car Boat Marine
Switch unit between MPH(Mi), Knots(NMI) and Km/h (KM) by Backside Button. -Indicating Range: 0~999 (MPH, Knots, Km/h adjustable). -Total Mileage Adjustable, Mileage Range: 0-999999 (Mi,NMI,KM available).