12in tachometer, used to display the Rpm of your 1?10 cylinder gas engine vehicle, with 0?10000RPM/min measuring range. It has a black dial, tinted lens and illuminated red pointer. 2Featuring 10 solid color modes and 2 color cycle modes, which can match the factory dashboard lights and bring a unique style to the interior of the vehicle. Built?in color memory function eliminates the need to change the color of the meter every time the vehicle is started. 3The black meter face with magnified tinted lens will add a stylish look to your gauge, and when installed on the dashboard, radio slot or drivers side pillar, it will enhance the overall appearance of your car or truck style. 4The pointer is driven by a stepper motor, which can accurately display the engine Rpm, with high indication accuracy and relatively simple drive control. The parameter display is accurate and stable, and the power consumption is low. 5Smoked lenses during the day, and bright display at night, clearly and intuitively display the water temperature. Simple installation, no complicated operations are required.