The arctic air cooler not only lowers the temperature of the air around you, it also purifies the air to prevent dust, pollen, and other allergens from being spit out onto customers. It also humidifies the air which makes it better for customer's skin. There is very few steps required to operate the cooler. You simply turn the speed to you prefer, put around 750ml of water in the machine, press a button, and wait for the air to cool. The USB port is a very unique feature.