【Range】Tachometer Readings from 0-9000 RPM. The RPM tachometer monitors the engine's rotational speed and displays the RPM data. Make sure your engine stays in good condition
【Funtion】RPM tachometer gauge is 60mm (2.5 inch), Whether it's under the bright glare of daylight or the low-light conditions of nighttime driving, ensuring clear visibility in all driving conditions
【Backlight】Multicolor : red, orange, blue, yellow, green, purple, white etc, you can customize the display according to your like or driving environment
【Features】Tachometer gauge fit for 12V Car Gasoline Engine, suitable for 4/6/8 cylinder engines. The AUTO RPM gauge display precision and stability, low power consumption
【Package】Includes Tachometer, Wiring Harness, Installation Instructions. NOTE: Please set the appropriate speed ratio according to the number of cylinders in your car. Setting the wrong speed ratio will cause significantly inaccurate RPM readings or unstable/jumping RPM display