Feature :1.Suitable for all vehicles and off-road vehicles 2.The signal comes directly from the satellite signal receiver(GPS Antenna), dont need other speed sensor. 3.The gauge has the advantages of high precision, quick location confirmation and short start up time. 4.IP67 waterproof and dustproof grade 5.Reverse polarity protection and anti-fogging performance 6.No Stationery Drift 7.Stepper motors used for full range of stepping gauges, great feature with its less power consumption, longer life, higher precision, etc.Specification:-Fixing dimension: 85mm(3-3/8 ) -Indicating Range: 0-200Km/h and 0-8000rpm -Working Voltage: 12V/24V -GPS Blind Area Odometer Compensation -Indication light: LEFT, HIGH BEAM, RIGHT -Backlight: Red -Working temperatures: - 40 to 85C -Operation mode: LCD display, stepper motorPackage Includes :1x GPS speedometer with tachometer 1x GPS Antenna 1x Multi-plug socket 1x Installation Instruction