Feature 1Highquality use of stepper motors, effectively improving the sensitivity of the tachometer. 2The numbers and pointer has red backlight function on the dial, which is easy to read in the dark. 3It has the characteristics of low power consumption, long life, high precision and high definition. 4Easy installation with users manual in English, professional installation is highly recommended for most of cars or motor. 5With the use of highquality ABS and stainless steel material, high performance and long service life.Item Type:Pointer TachometerMaterial: ABS+Stainless SteelDiameter: Approx. 85mm/3.35inVoltage: 9-32VDCWaterproof and Dustproof Rating: IP67Suitable: Car/truck/boat .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 xTachometer1 x Manual