Marine 52mm GPS Speedometer with Compass for Ship Boats Yacht Universal 12V 24V Without Odometer

Notes:There are some different number display color in the options, please choose the correct option when you are ordering.Thanks52mm(2inch) diameter for easy installation of all types of dashboardsHigh Resolution View under sunshine with Green/White/Red Backlight.No need mechanical sensors but using GPS satellite to get Speed and DirectionReverse polarity protection and anti-fogging performanceIP67 WaterproofProduct name: GPS Speedometer with CompassFixing dimension: 52mmIndicating Range: 0-999 (MPH, Knots, Km/h adjustable)Backlight: Green/White/RedWorking Voltage:12V/24VWorking temperatures: -40 to 85°COperation mode: LCD display, stepper motor1x GPS speedometer 1x GPS Antenna 1x Multi-plug socket 1x External Button 1x Installation Instruction