Constructed of 304 stainless steel and features easy-to-use color coded dimming levels. When off, the LED ring is orange; maximum bright, the ring is green; lowest light level, the ring is purple; and in between stages are shades of blue. A short press turns the light on and off, then a longer press activates the dimming/brightening function. Memory function turns the light back on at the same brightness level as when it was turned off. 12/24VDC. IP67 waterproof rating. Amps 1.5 Max A 7/8" B 7/8" C 3/4"