The product is equipped with a sun visor, is designed with an LCD color screen, and has a high clarity display. The product is used to measure the speed of automobile engines, and has the characteristics of high sensitivity and simple operation. It is made of plastic and electronic component material, and it is durable and anti-corrosive. The length of meter is 5cm, the width is 10cm, the height is 7.5cm. It is suitable for all cars, trailers, ships, excavators, construction vehicles, forklifts, etc. Item Name: Vehicle Tachometer Material: Plastic,Electronic Component Frequency: 20-20kHz Working Voltage: DC 9-36V Display Mode: LCD Color Screen Instrument Type: RPM Instrument Measuring Range: 50 to 9999RPM Default Cylinder Settings: 2, 3, 4, 5, 6, 8 Working Temperature: 0-50 Degrees Celsius Features: Easy to Install, Low Power Consumption, Durable Size Details: 5cm x 10cm x 7.5cm/1.97" x 3.94" x 2.95" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Vehicle Tachometer 1 x User Manual