?Function?7 Solid Color Settings will meet your requirement. You can switch color of light you like-Colors Include Blue, Red, Green, Teal, Purple, White & Yellow ?Material?GPS speedometer is made of Stainless Steel 316L Bezel and Anti-fog Glass. IP67 waterproof and dustproof grade. The boat GPS speedometer Install for 85mm(3 3/8"). Indicating range: 0-80MPH ?Wide Applicability?Boat GPS speedometer suitable for all vehicles Car/ Marine/ Boat/Truck/Bus/Motorcycle and off-road vehicles. It gets quicker under a clear view of the sky. The signal comes directly from the satellite signal receiver(GPS Antenna), don't need other speed sensor ?Stability?Marine GPS speedometer gauge has the advantages of high precision, quick location confirmation and short start up time ?Package?Included 1x GPS speedometer, 1x GPS Antenna, 1 x Wire Harness, 1x Installation Instruction