6 Gauge Set 110mm GPS Speedometer 0-120MPH Tachometer for Marine Boat Car Truck. 316 stainless steel for long-term use even in acid-base, humid environment. IP67 waterproof and dust-proof grade. With curved glass(with anti-fog function). Suitable for all kinds of vehicle modification. Using stepper motor drive pointer, accurate display of the engine speed, and with the LCD display clear display mileage. Gauges have many kinds backlight color (red, yellow, orange, green, blue, purple, white), customers can adjust any color that you like. Working Voltage: 932V DC. Size:12x8x12cm/4.72×3.1×4.75 inch. Backlight:7 Colors Backlight. Engine hours:0.0-99999.9H. Backlight:7 Color backlight. Sizes: 52 mm (2-1/16). Resistance: 240 (E)-33 (F) ohms. Input signal: 287.422.4 ohm. Install diameter:? 52mm or 2-1/16. Indication range:010bar / 0-150 PSI. Measuring Range: 8 – 16 (V). 1X 110MM Digital GPS Speedometer Gauge. 1X 52MM Fuel level gauge. 1X 52MM Water temp gauge. 1X 52MM Oil Pressure gauge.