1Has excellent antifog function, with better performance and high reliability. 2With IP67 protection grade, the whole shell is completely waterproof, and it can be used for a long time at sea. 3This tachometer uses a stepping motor to drive the pointer, accurately displays the engine speed, and uses LCD to have clear hour display. 4Features with high indication accuracy, repeatability and versatility, reliability and stability, relatively simple drive and control, and so on. 5Easy installation through multiplug terminal connection, applicable to the modification of various vehicles. 6Suitable for car/truck/boat/diesel generator/gasoline engine tachometer. Condition: 100% Brand New Item Type: Tachometer Material: Stainless Steel+ABS Optional Color: White Dial Silver Frame, Black Dial Silver Frame Voltage: 12V / 24V Installation Diameter: Approx.85mm / 3.3in Working Current: 60MA Speed Ratio: 1-300 adjustable Function: Current Tacho/RPM and Hour Operation Mode: LCD Display, Stepping Motor Protection Grade: IP67 for Front Side; IP65 for Back Side Application: Suitable for Car/Truck/Boat/Diesel Generator/Gasoline Engine Tachometer 1 x Tachometer1 x Instruction Manual