4L 12V DC and 220V simple portable mini fridge:1) Power: AC 100V,120V/ 220V,240V; DC 12V Round barrel beverage cooler mini refrigeratorSERVICE CONDITION:According the no compressorportable fridgefor car use( no freezing function design), It's will take about 2-3 hours when freezing unfrozen food and drinks.Please toread the product instruction before usingit. The storage food can be thermal insulation for several time.How to use it?Convenient-simply plugintoanyDC12V cigarettelighterincar,also can be used at home or inoffice by plugging into a AC110~220V outlet.