GlowShift Black 7 Color Volt Voltmeter Gauge - Voltage Range 8-18 Volts - Black Dial - Clear Lens - 2-1/16" 52mm 2 1/16 Inch (52mm) Black Face Gauge with a Magnified Lens Voltage Reading from 8 to 18 Volts 7 Solid Color Settings and Two Color Cycle Modes with Dimmer Function that Allows the Gauge to Dim 30% Mounting Hardware & Installation Instructions Free Lifetime Technical Support & One Year Limited Warranty