Auto Meter Cobalt Digital Air / Fuel Ratio Gauges have the look and feel of the gauges from back in the day but with a twist of styling. They feature a black face, anodized bezel, white numbering and blue accents. The explosion of Cobalt blue light shines through the dial and into any interior scheme during night time. The brilliant LED Cobalt blue light shines through the dial of the face to light up the numbers. It is easy on the eyes and even easier to read at a simple glance. It includes a rugged, rubber-lined shock proof strap with mounting base and operates on standard/electronic and most high performance electronic racing ignitions. These digital gauges use micro processor controlled displays for the ultimate in precise, high-tech readings. Look to our digital units when you need an eye catching visual reference and an exact numeric reading.