Feature:1. Waterproof and Antifog: Made of 316L stainless steel front cover bezel and antifog curved glass, with IP67 waterproof dustproof rating, the gauge is suitable for harsh conditions, including acidic, alkaline, or humid marine environments. The highly transparent curved PC, coupled with the curved glass structure, provide superior anti fogging performance.2. 7 Color Backlight and LED Display: Our speed guage provides an easy to read seven color backlight for nighttime navigation, while digital display has high precision, repeatability, strong versatility, reliability and stability, easy to use.3. Dual Display Design: Combining digital and pointer display for efficient data reading, eliminating the need to switch between different gauges, making reading more convenient.4. Wide Voltage Range: The speedometer adopts ultra wide working voltage design, 932v long term working voltage, up to 36v, small power consumption, long life, high precision, short start up time.5. Secure Connection: Featuring a snap on wiring design for a sturdy connection, ensuring the gauge can operate even under strong vibrations, suitable for various transportation vehicles like boats, yachts, and outboard motors.Specification:Item Type: Boat SpeedometerMaterial: Stainless Steel 316L Bezel + Anti fog GlassProtection Level: IP67, fully waterproof; excellent anti fog function;Backlight Color: Red (default) - green - blue - white - yellow - yellow green - orange - purple (color can be switched)Display: Digital + PointerOperating Voltage: 9-32VDCOperating Current: 100mAOperating Temperature: -30 to +70Storage Temperature: -40 to +85Protection Level: IP67, can work underwater in the 1m positionSensor Wiring Length: 3.9m / 12.8ftFitment: Fit for Boat Yacht RV Truck MotorcycleWiring:1. Red wire -- +9-32VDC2. NC (not connected)3. Orange wire -- Backlight (+)4. Blue wire -- Power supply negative (-).Package List:1 x Speedometer1 x Wiring1 x Wiring with Sensor1 x Mounting Base Clip2 x Nuts1 x Instruction ManualNote:After drilling the hole, ensure that there is at least 70mm space behind!