6 Gauge Set GPS Speedometer 0-80MPH Tacho For Car Marine Boat Truck Waterproof. 6 Gauge Set 85mm GPS Speedometer 0-80MPH Tachometer & 52mm Fuel Water Oil Gauge For Car Boat. 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. Install Diameter:? 85mm or 3-3/8. Working Voltage: 932V DC. Size: 12x8x12cm / 4.72×3.1×4.75 inch. Indication Range: 0-80 mph. Backlight:7 Colors Backlight. Engine hours: 0.0-99999.9H. Backlight :7 Color backlight. Indicating Range: 08000 RPM. Sizes: 52 mm (2-1/16). Measuring Range: Empty – Full. Resistance: 240 (E) – 33 (F) ohms. NOTES: 240-33ohms fuel level sensor only fit for 240-33ohms fuel gauge. Input signal: 287.422.4 ohms. Install diameter:? 52mm or 2-1/16. Indication range:010bar / 0-150 PSI. Measuring Range: 8 – 16 (V). 1X 85MM Digital GPS Speedometer Gauge. 1X 52MM Fuel level gauge. 1X 52MM Water temp gauge. 1X 52MM Oil Pressure gauge.