Specification:Gauge Size: 3.75 Inch (95mm)Shell: Black ABSRPM:0-11000 RPMMovement structure: High speed Stepping MotorBacklight:7 Colors Light(can be adjustable)RPM Warning settings: Can be setFit to All Kinds of 1-8 Cylinder Engine CarsOnly for 12V vehiclesFitment:For 12 volt, 1 to 8 cylinder, gasoline carPackage Included:1 X Tachometer1 X Allen wrench1 X Installation Manual