Feature:

Lights color: 7Color include (White, Red, Blue, Light Blue, Purple, Green, Yellow)
You can switch the color of light you want by press the button.
Power: DC 12V Professional
Diameter: 2 inch / 52 mm
Fitment: All 12Volt Car with 2" or 52mm Diameter holder
Wires connecting : Red to Ignition Switch (+), Black to Battery 12V (-), Green to Sensor Wire

Package includes:

1 x Car Gauge
1 X Instructions