This portable USB Air conditioner has low power consumption and ultra-quiet design that is suitable for everyone. Just input some scents, then it could make air fresher. Add ice or ice water into the storage box, to provide you freezing air, it will be able to give you a steady stream of conveying cold wind,bring a trace of coolness whenyou are at exercise rest time,crowded concert scene,muggy air. You don't worry about hot weather.