1Wide Application: The speedometer can be applied in variety of stepping instruments, such as automobiles, engines, boat, RV, yacht, engineering machinery, etc. 2IP67 Waterproof: With IP67 high waterproof and dustproof grade and anti fog curved glass, speed gauge is not afraid of bad weather, not easy to damage. 3Characteristic: The speedometer has the advantages of low power consumption, long life and high precision. Ultra wide working voltage design, long term working voltage 932V, up to 36V. 4Premium Material: Made of stainless steel and ABS, the speedometer can be used in acid, alkali and humid environment, durable and long service life. 5Simple Operation: Easy to install, with a detailed manual, installation, wiring and the use of the function have a clear description. Item Type:GPS Speedometer Material: Stainless Steel + ABS Dial Color: Black, White Screen:LCD screen Dial Backlight Color: Colorful (can be adjusted manually or switched automatically) Signal: GPS Range: 0-200MPH; 0-300KM/H (dial double scale, inner ring km/h, outer ring MPH) Working Voltage: 9-32V DC Installation Hole Diameter: 85mm/3.35in, and ensure that there is at least 55mm/2.17in space behind the dashboard Working Temperature: -30-+75 Storage Temperature: -40-+80 Applicable Scenarios: Universal for automobiles, engines, boats, RVs, yachts, engineering machinery, etc. Description: The default prompt of the product is a single mileage, which will not be cleared when the power is off. Press and hold the rubber on the back for five seconds to clear the single mileage The accumulated mileage will not be cleared if the power is off (the total journey cannot be cleared) COG shows the direction of the s navigation, and the car shows the position 1 x Speed Gauge 1 x Manual 1 x GPS Receiver