Thank you for viewing! Functionality confirmed! I've used it about twice, but I'm selling it because I bought a refrigerator from another company! It can be used with just a car's cigarette lighter socket, even without a battery! All accessories are included, but the box is not. Please understand this before purchasing. The battery is not included. The battery can also be charged, and it can be charged using the cigarette lighter socket in a car. The cigarette lighter charger is unused and will be included. HiKOKI white cooler box, with cooling function, perfect for outdoor activities. - Brand: HiKOKI - Type: Cooler Box - Color: White - Features: With cooling function, with insulation function Thank you for viewing.