Key Specifications Capacity: This cooler typically has a 4-liter capacity. It can hold up to six 355ml cans of beverages. Dual Function: Functions as both a cooler and a warmer. Cooling: The internal temperature can be reduced to approximately 20°C below ambient temperature. Heating: It can keep contents warm up to approximately 65°C. Power Supply: Includes dual power cords for: 12V DC via a car cigarette lighter socket. 220V AC via a standard household electrical outlet. Material and Design: Made of durable plastic. It features a compact and lightweight design (approximately 10 grams according to some sources), making it easy to carry and transport. Operation: Uses thermoelectric cooling technology (compressor-free), resulting in quiet operation. Uses: Storage cold drinks and snacks while traveling, on road trips, and camping. Storage cosmetics and skincare products. Use in offices, bedrooms, or dormitories.