1Wide range of application, suitable for ships, yachts, trucks, commercial vehicles, construction machinery. 2Stainless steel material, waterproof, durable, has long service life, not easy to damage. 3Can freely switch the speed unit of kont, mph, km/h, which is convenient for you to watch and provides you with more convenience. 4The navigation pointer supports 8 direction pointers, bringing you more convenience. 5Small, light and easy to install, no other complicated steps are allowed, bringing you more convenience.Condition: 100% Brand NewItem Type:SpeedometerMaterial: 316 Stainless Steel + ABS + PCOptional Color:BlackDial,WhiteDialInput Parameters GPS Signal Working Voltage: 9-30VDC Working Current:Display Function: SOG: Ground Speed TRIP: Single Mileage, Cleared when Power Off ODO: Accumulated Mileage, Saved when Power Off COG: Heading, Clockwise Angle of True North Battery Voltage: 9-30V (Not Inclouded) Navigation Pointer: 8 Directions Can freely switch Kont, mph, km/h speed Units. Dial Diameter: Approx. 9.6cm/ 3.8in Installation Diameter: Approx. 8.5cm/3.3in 1 xSpeedometer1 x Instruction1 x GPS AntennaPlease note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.