A thermoelectric cup cooler that replaces standard boat cup holders and keeps a can, bottle or any appropriately sized beverage container chilled on even the hottest days. Designed as a marine-tough open-top cylinder that replaces nearly any existing standard 4-inch cup holder, it is large enough to fit a 20-ounce water or soda bottle. 316 stainless steel trim ring with aluminum interior has a corrosion-resistant, non-stick surface for easy cleaning. Powered by the house battery, control of all the Eskimo Cups can be managed under a single switch or set up by zone. 12V, 3.1Amps.