Product Features: -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. Technical Data: -Fixing dimension: 85mm(3-3/8") or 52mm(2") -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, Mileage Range: 0-999999 (Mi,NMI,KM available) -Trip Counter -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 motor Package Includes: 1x GPS speedometer 1x GPS Antenna 1x Multi-plug socket 1x Installation Instruction Responsible Person Name:Apex CE Specialists GmbH Responsible Person Address:Grafenberger Allee 277-287 Duesseldorf,Nordrhein-Westfalen,Germany,40237 Responsible Person E-mail:Info@apex-ce.de