Specicifcation Material: 316 Stainless Steel + ABS Plastic Install Diameter: Φ85mm or 3-3/8'' Signal: GPS Working Voltage: 9~32V DC Working Current: ≤100mA Operating Temperature: -30℃ ~ 75℃ Storage Temperature: -40℃ ~ 85℃ Waterproof and Dustproof Grade: IP67 Indication Range: 0-80MPH Backlight: 7 Colors Backligt （Red, Yellow, Orange, Green, Blue, Purple, White) Package included 1x 85MM Digital GPS Speedometer Gauge 1x Instruction 1x GPS Antenna Feature 1. High-brightness LED backlight. 2. 316 stainless steel for long-term use even in acid-base, humid environment. 3. IP67 waterproof and dust-proof grade. 4. With curved glass( with anti-fog function). 5. Suitable for all kinds of vehicle modification. 6. Using stepper motor drive pointer, accurate display of the engine speed, and with the LCD display clear display mileage. 7. Gauges have many kinds backlight color （red,yellow,orange,green,blue,purple, white ）, customers can adjust any color that you like Note * High performance