Condition: Item Type: GPS Speedometer Material: Stainless steel and nickel-plated plastic Color: As picture shown Technical Data: Fixing Size: Approx. 85mm(3-3/8in) Indicating Range: 0-999(MPH, Knots, KM/H adjustable) Working Voltage: 9-32V(12V/24V) Functions: for SOG- -current speed COG- -moving direction TRIP- -mileage for one trip(will become 0 after turning off the power) ODO- -cumulative total mileage(cannot be reset) Operation Mode: LCD display, stepper motor 1,Red, green, blue, white, yellow, olive, orange, purple, totally 8 kinds different backlight color, it will change automatically every 1 minute, and you can fix only one color you like by pressing the gauge back "set" button. 2,IP67 waterproof and dustproof grade, it can work in the water. 3,Suitable for all vehicles, boats and off-roads vehicles. 4,The signal comes directly from the satellites signal receiver(GPS speed sensor). 5,With the advantages of high precision, quick location confirmation and short start up time. 6,Stepper motors used for full range of stepping gauges, great feature with its less power consumption, longer life, higher precision, etc. 7,With curved glass, features anti-fog function, allows you to see the display clearly at any time. 8,Using ultra-wide working voltage designed, 9-32V long-term working voltage, and can up to 36V (≤ 1 minute). 1 x GPS Speedometer 1 x Speed Sensor 1 x Connect Cable 1 x User Manual