Suitable for all kinds of vehicle modification,the use of stepper motor drive pointer,accurate display engine speed,and with the LCD display clear display mileage,with instructions of high precision,repeatability and versatility,reliability and stability,drive And control is relatively simple and so on. Speed odometer using stepper motor drive pointer,accurate display of the engine speed,and with the LCD display clear display mileag. Name: GPS Speedometer Operating Voltage: 12V/24V Connectioning: Red-Battery(+9-32VDC) Blue-Battery(-) Orange-Blacklight(+9-32VDC) Indicating Range: 0-200KM/H Input Signal: GPS signal,with GPS antenna Protection Class: IP67,can work underwater 1m position Colour: silver + black Material: ABS plastic Package Contents: 1 * Speedometer 1 * GPS antenna Only the above package content,other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.