Features: 1) Layers for good insulation 2) Cold and heat can be transferred through coated aluminum liner 3) Hold 2L bottles standing, conveniently plug into any 12V cigarette lighter in car, boat or plugs into safe adapter indoor 4) Power supply: DC 12V / AC 100-240V 5) Cooling capacity: 18oC ?25oC below ambient temperature 6) Heating capacity: +65oC by set-point thermostat