Feature: 1. Wide Compatibility: Allows for wide application on RV, yacht, fishing boat, ship, motorcycle, automobile modification and other fields. 2. Useful Tachometer: Able to display water temperature, oil pressure and speed, also has wide measurement range of 0-4000RPM and 0.0-99,999.9h accumulated engine hours. 3. Premium Materials: Made of stainless steel front frame and anti fog curved glass cover, which can be used for a long time even in humid environments, and is very suitable for harsh marine environments. 4. Reliable Working: Ultra wide working voltage design enables stable working under DC 9-32V, while the red backlight for easier reading. Waterproof, high accuracy, small power consumption, quick start up. 5. Easy to Install: Comes with a light weight and a compact size as well, the convenient installation can be quickly completed in minutes. Specification: Item Type: Tachometer Material: Stainless steel frame, anti fog glass, PC. Color: Black Disc Tachometer Display Range: 0-4000RPM Accumulated Engine Hours: 0.0-99,999.9h Backlight Color: Red Working Voltage: DC 9-32V Installation Dimension: Approx. 85mm / 3.35in Function Display: Water temperature, oil pressure, speed. Application: For RV, yacht, fishing boat, ship, motorcycle, automobile modification and other fields. . Package List: 1 x Tachometer1 x User Manual