Feature 1Multifunction speedometer can display speed(KM/H), single mileage, total mileage, single mileage will reset when power off yet total accumulated mileage will be saved. 2GPS can shows course, driving direction, mirror tempered glass+clear backlight display, easy to read the results. 3High quality ABS, 316 stainless steel and tempered glass material, wearresistance and corrosionresistance, durable to use. 4IP67 waterproof and dustproof grade, adapt to the harsh environment, suitable for ships, yachts, outboard motors, automotive engineering machinery, motorcycles, etc. 5Simple installation, open an 85 mm (3 3/8 inch) hole on the dashboard and leave a 55 mm (2 3/16 inch) behind the panel to fit the meter.Item Type: GPS SpeedometerMaterial: ABS+316 Stainless Steel + Mirror Tempered GlassWorking Voltage: 9-32VDCInstallation Diameter: Approx. 85mm/3.3inWaterproof: IP 67Wiring:Black: Ground (-)Red: 9-32V DCYellow: Backlight .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 x Multifunction Speedometer1 x GPS1 x English Installation Instructions