The ultimate in convenience for the long haul:The Koolatron® Krusader Cooler has our largest capacity yet at 49 L, making this dual cooler/warmer the perfect accessory for long-haul travelers. Truckers, campers, families, or anyone heading out on a long road trip will love the practicality of iceless thermoelectric cooling that uses less power than your vehicle’s tail light. Add an AC adapter (sold separately) to seamlessly transfer the cooling power from your vehicle to the indoors for the ultimate in travel convenience.Compact and safe food and beverage storage:With its versatile design, you can use the Krusader as a classic ice chest or upright as a convenient mini fridge on the go. The durable hard plastic injection molded exterior protects contents and ensures peak performance. Advanced thermoelectric technology offers cooling or warmer functions in one unit and will not be affected by the movement of your vehicle, making this cooler the perfect choice for road trips, family picnics, camping, or boating.Tips for Best Use:For quickest cooling, pre-chill items before placing in cooler.For effective operation, ensure fan is not blocked.Minimize opening and closing and ensure lid is closed properly.Lowest possible temperature depends on the surrounding temperature.To avoid draining your vehicle’s battery when using 12V mode, only run cooler when the engine is on.