13in1 tachometer, it can display engine speed, water temperature, oil pressure, accumulated hours. 2Using stepper motor, ensures high sensitivity. Low power consumption, long lifespan, high accuracy. 3The dial is equipped with light to make reading at night clearer, which is more convenient to use. 4IP67 waterproof and dustproof, it can withstand harsh environments, not easy to damage. 5Wide range of applications, suitable for cars, trucks and boats. Provided users manual, easy to install. Item Type: 3-in-1 TachometerMaterial: ABS + Stainless SteelVoltage: 9-32V DCDisplay: Engine speed, water temperature, oil pressure, accumulated hours when starting upWaterproof and Dustproof Rating: IP67Application: Suitable for car/truck/boat 1 x Tachometer1 x Manual1 x Signal Harness