7 color user-selectable background illuminations (red, blue, green, white, yellow, orange, and violet) with adjustable brightness for day and night - with independent dimming of dial and pointer. Features a peak recall function, which enables the user to review high gauge readings. The highest reading will be stored by the gauge until it is cleared. Precision 280° brushless stepper motor movement provides a quiet, fluid, and accurate pointer movement with superior dial resolution. Compatible with most 1-12 cylinder engines with 12v ignitions. Some applications may require a tachometer adapter, sold separately. Patented Wide Angle dial design provides the largest viewable dial available in a 2-1/16" gauge.