Feature: 1. Marine Grade Durability: The digital speedometer gauge is constructed with a 316L stainless steel front cover bezel and anti fog curved glass cover. The high transparency curved surface PC and curved glass structure form a double antifog effect. With its dual layer fog resistant glass structure, IP67 waterproof and dustproof rating, this gauge is perfect for marine use. 2. 7 Color Backlit Display: Featuring a seven color backlit digital display, this gauge provides easy visibility for nighttime viewing. The digital display offers high accuracy, great repeatability, versatility, and reliable stability. 3. Digital and Pointer Display: The innovative design of combining digital and pointer displays enhances data readability and efficiency. Users can quickly and easily grasp speed data without the need to switch between different gauges, making it more convenient. 4. Wide Voltage Range and High Accuracy: The gauge is designed with an ultra wide working voltage range of 9‑32V, with a maximum of 36V. It boasts low power consumption, long lifespan, high accuracy, and quick startup time, ensuring reliable performance even in demanding conditions. 5. Secure Connection and Vibration Resistance: The gauge features a snap on wiring design for secure connectivity, allowing it to withstand strong vibrations and ensuring reliable working. This makes it highly suitable for various types of watercraft such as boats, fishing boats, yachts, and outboard motors. Specification: Item Type: 85mm Digital Multifunctional Gauge Material: Stainless Steel 316L Bezel + Antifog Glass Protection Level: IP67, completely waterproof; Excellent anti fog function, can work underwater at 1m depth Backlight Color: Red (default), Green, Blue, White, Yellow, Yellow Green, Orange, Purple (color switchable) Working Voltage: 9-32VDC Working Current: ≤100mA Working Temperature: -30℃-+70℃ Storage Temperature: -40℃-+85℃ Application: Suitable for Boats, Yachts, RVs, Trucks, Motorcycles, etc. Wiring: 1. Red wire: +9-32VDC 2. NC (Not connected) 3. Orange wire: backlight (+) 4. Blue wire: Power negative (-). Package List: 1 x Speedometer 1 x Wiring 1 x Wiring with Sensor 1 x Mounting Base Clip 2 x Nut 1 x User manual Note: Ensure there is at least 70mm space behind after drilling the hole!