Feature:1. UNIVERSAL COMPATIBILITY: The tachometer is compatible with various RPM sensors and effectively displays engine speed. Suitable for a wide range of applications, including cars, trucks, boats, generators, gasoline engines, construction machinery, and agricultural equipment, ensuring high performance and accuracy.2. HIGH DURABILITY: Designed for longevity, this gauge boasts excellent durability. It is built to perform reliably even in harsh marine environments, shockproof and wearproof, ensuring stable use.3. MULTI COLOR BACKLIGHT DISPLAY: Tachometer with 7 colors backlight for clear and easy reading. Enhance visibility and add a stylish touch to your vehicle or machinery.4. EASY INSTALLATION: The tachometer requires a panel cut out of just 110mm (4 3/8 inches) and ensures that there's adequate space (55mm back panel depth) for installation. Its straightforward design makes setup quick and easy.5. PRECISE DESIGN: Engineered with precision, this gauge offers outstanding performance and high accuracy in readings. It is professionally manufactured to meet the rigorous demands of the marine industry, ensuring you receive precise data every time you are out on the water.Specification:Item Type: Boat TachometerVoltage: DC 9-32VRPM: 6000RPMFitment: Suitable for Truck Tractor Trailer Car RV Boat.Package List:1 x Tachometer1 x User Manual