Feature:1. Extensive Usage: The multiple display speedometer is extensively applicable to full range of stepping instruments, can also be used for car, engine, boat, RV, yacht, engineering machinery, etc.2. Premium Material: The speed meter is exquisitely made of high quality stainless steel and ABS with excellent resistance to acid, alkali and humid, durable and have a long lifespan.3. IP67 Waterproof: The speedometer comes with IP67 waterproof and dustproof performance, and the curved glass is antifog, no need to worry about the damage caused by bad weather.4. Great Characteristics: Specially designed with ultrawide working voltage, the longterm operating voltage is 9 to 32V, maximum can up to 36V. Low power consumption and high accuracy.5. Convenient to Use: The high grade mileage meter is designed with simple structure for easy installation, and with a detailed manual, will clearly describe the installation, wiring and use functions.Specification:Item Type: SpeedometerMaterial: Stainless Steel + ABSScreen: LCDBacklight Color: Colourful (Can be adjusted manually or switched automatically)Signal: GPSMeasuring Range: 0-160MPH, 0-240KM/H (Double scale, inner ring is KM/H, outer ring is MPH)Installation Diameter: Approx. 85MM/3.35in, and ensure that there is at least 55MM/2.2in space behind the dashboard.Working Temperature: -30 to +75Storage Temperature: -40 to +80Application: Universal for automobiles, engines, boats, RVs, yachts, engineering machinery, etc..Package List:1 x Speedometer1 x GPS Receiver1 x ManualNote:1. The default tip is a single mileage, which will not be cleared even power off. Press and hold the rubber on the back for five seconds to clear the single mileage.2. The accumulated mileage will not be cleared if the power is off (the total mileage cannot be cleared).3. COG is to display the direction of the ship navigation and the car direction.