MaxTow Double Vision Volt Voltmeter Gauge - Voltage Range 8-18 Volts - Black Gauge Face - Blue LED Illuminated Dial - Analog & Digital Readouts - for Trucks - 2-1/16" 52mm 2 1/16" (52mm) Black Face Gauge with a Magnified Lens Voltage Reading from 8 to 18 Volts Double Vision Display Feature with Blue LED Analog and Digital Readings 3' Power Wire Harness Mounting Hardware, Installation Instructions, Free Lifetime Technical Support, & One Year Limited Warranty