ARTILAURA GPS Speedometer 2-1/16" 52mm Digital Boat GPS Speedometer Gauge MPH Km/h Knot TFT Screen Antenna Odometer for AUTO Car Marine (Black & Silver)

【Universal Compatibility】: The GPS speedometer diameter is 2-1/16 inch (52mm). GPS Speedometer Gauge fits almost 12V/24V vehicles including Car, Boat, Marine, Truck, Bus, and Motorcycle, meeting diverse transportation need. 【Switch Units】Digital GPS speedometer switches between 3 units: MPH (miles), Km/h (kilometers), and Knots(nautical miles). Switching is simple: just yellow wire touch the ground to change the unit. One gauge fulfills all your needs for different speed units. 【Material】52mm GPS Speedometer features a 316L stainless steel bezel and anti-fog glass, IP67 waterproof and dustproof rating. Speedometer display range: 0-999.9. Total mileage: 0-999999 Mi/NMI/KM, TRIP: 0-999 Mi/NMI/KM. 【Stability】Marine GPS Speedometer has the advantages of high precision, quick location confirmation and short start up time. Stepper motors used for full range of stepping gauges, great feature with its less power consumption, longer life, higher precision, etc. 【Package】: Includes 1x Boat GPS Speedometer, 1x GPS Antenna, 1x Wire Harness, 1x Installation Instruction. It gets quicker under a clear view of the sky. The signal comes directly from the satellite signal receiver(GPS Antenna), don't need other speed sensor