Universal 85mm Digital GPS Speedometer 0-999.9 Course Adjustable Odometer with GPS Antenna and 7 Colors Backlight 12V 24V

-Suitable for all vehicles, marine vessels and off-road vehicles-The signal comes directly from the satellite signal receiver(GPS Antenna), don't need other speed sensor.-The gauge has the advantages of high precision, quick location confirmation and short start up time.-IP67 waterproof and dustproof grade-Reverse polarity protection and anti-fogging performance-No Stationery Drift-Stepper motors used for full range of stepping gauges, great feature with its less power consumption, longer life, higher precision, etc.-Fixing dimension: 85mm(3-3/8")-Indicating Range: 0~999 (MPH, Knots, Km/h adjustable)- Switch unit between MPH(Mi), Knots(NMI) and Km/h (KM) by Backside Button-Total Mileage Adjustable, Mileage Range: 0-999999 (Mi,NMI,KM available)-Trip Counter- Compass Indicator Function-7 Colors backlight available-Working Voltage: 12V/24V-GPS Blind Area Odometer Compensation-OverSpeed Buzzer Alarm (Value Adjustable)-Working temperatures: - 40 to 85°C-Operation mode: LCD display, stepper motor1x GPS speedometer  1x GPS Antenna  1x Multi-plug socket  1x External Button  1x Installation Instruction