General description Speed over the ground TRIP: Single mileage, reset after power failure. ODO: Accumulated mileage, saved when power off. COG: Heading, clockwise angle of navigation pointer: 8 directions. Can freely switch between km/h, mph, and kont speed units. Technical specifications Working voltage: 9~32VDC Working current: Less than 120mA Working temperature: -20~70°C Storage temperature: -30~80°C GPS antenna length: 3 meters Measurement allowed error: +/- 1-3cm Color: White + Black Material: ABS Compatibility and accessories Package Contents: 1 * GPS Speedometer 1 * GPS Antenna 1 * Instruction manual