1、Large Capacity Water Tank: Air conditioner cooling fan has a large capacity water tank, which can be filled up at one time and humidified for a long time. 2、Easy to Clean: Portable air conditioner fan detachable design, easy to clean, healthy, environmentally friendly, elegant and textured, long lasting. 3、Portable Carrying Strap: The USB evaporative cooler features a microfiber leather carrying strap for easier carrying. 4、Small Size: The USB evaporative cooler has a compact design, it will not take up too much space on the desktop, and it is small and portable. 5、Wide Application: Cooling fan can be used at home, student dormitory, office, car, etc. Adding ice cubes will have a more comfortable effect.