MAIMEIMI GPS Speedometer 85mm 338 Digital Boat GPS Speedometer Gauge Waterproof MPH Knots Kmh Adjustable for Car Marine Truck Motorcycle 932V Black

The GPS speedometer gauge with TFT screen it display the range clearly 932VDC Working Voltage Speed Meter Gauge is IP67 waterproof and antifogging protection Diamete Open a 85mm 3 38 and 55mm 2 316 depth hole to put the digital gps speedometer into it easy to install Three unit can be switched kmh mph knotrounded to one decimals 85mm gps speedometer fits for car tractor truck boat marine motorcycle etc Tachometer 09999 ODO odometer 0999999km Save data when off electricity TRIP 09999km Return zero when off electricity Digital Compass 0359 After connecting GPS speedometer it takes about 30 seconds to get signal in the first time It gets quicker under a clear view of the sky How to switch between altitude and voltage Press and hold the button on the back of the GPS speedometer then power on the device to switch between altitude and voltage