Features: High precise Navigation speedometer with 0-200KM/H ranging and waterproof ABS casing ensures accurate marine/vehicle speed tracking in lakes, rivers, or oceans. Features 85mm sunlight readable screen and enhanced Navigation antenna for 20% better signals reception in challenging environments. Ideal for boat owners, truck driver, and motorcycle riders needing reliabled speed/odometer data for marine vehicles or land transport. Performs flawlessly during fishing expeditions, coastal cruising, or highway drives with corrosions resistant stainless steel components. Combines durability with user friendly operations – store 100 hour travel and enjoy fast speed updates across water or road surfaces. Specifications: Type: Speed odometer Installation diameter: 85mm or 3-3/8 inches Working voltages: 9-32V Operating temperature: -30℃-75℃ Storage temperature: -40℃-85℃ Waterproof grade: IP67 Backlight: 7 colors backlight Component: Plastic + Stainless Steel Color: Black Applicable models: Suitable for marine, automobile, truck, motorcycle, yacht Package Includes: 1 Set Speed Meter note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind befores you order. 2.Due to the differences between different monitors, the picture may not reflect the actual color. Thanks for your understandings.