Features three LEDSs for night visiion. Allows the use of beverage cans with or without insulated wraps, as well as most standard size bottles. Drain fitting allows water to be drained directly into bilge with the use of 1/4" tubing (not included). Requires a 3-5/8" diameter hole for installation. The bottom is padded with a rubber insert to prevent rattling. Constructed of corrosion resistant stamped 304 stainless. 12VDC. LEDs 3 Blue Size 4-1/4" x 3-3/16" Hole 3-5/8"