USB Fridge Cooler & Warmer, HQF&reg; Mini USB-Powered Beverage Drink Cans Cooler/Warmer Refrigerator [Keep Warm and Cold] for PC Laptop Car Home office (Silver, Medium) Portable mini fridge, apply to all PC or other USB interface, no batteries or driver required, plug and play Cooler & Warmer -- to keep your cold drink stay cool longer, and make warm beverage keep warm longer at hand(Note: it is without Cooling $ Heating function as the actual fridge) Switch and LED indicator--"I" is for cooler with green light; Switch "II" is for warmer and the red light is on Volume: 10*7*4.7 inches, Powered by 4 feet USB cable, suitable for car office or home to keep beverage, coca-cola, cans, coffee and other drinks USB Fridge can holds two 12 ounce cans or a single beer