Evaporative Cooling Technology: Portable Air Cooler draws in warm air, quickly cools it with water evaporative cooling, provides humidified and cool air for your personal space, design adjustable multi-directional air outlet, if you add ice water, it will be effective. cools the hot air around you. 3 Block Wind Speed Adjustment: 4 in 1 multifunctional design, not only a lovely air cooler, but also a mini fan, humidifier, LED decorative lights, colorful circulating mood lights can easily find it at night, the cooling effect is remarkable, which can help you sleep better. Portable and Quiet: This mini air conditioner fan is designed to be lightweight and does not take up space, it can be easily carried, suitable for home, office, outdoor picnics, camping, etc. . He is very quiet (40db), even if you play in the library, you don't have to worry about the sound disturbing you and the people next to you. Energy Saving & A+++ Energy Saving: Contains no harmful refrigerants and doesn't use a compressor like traditional power-hungry air conditioners, this little air cooler works for you with rated power of 3W, which is very energy efficient compared to window air. power conditioners while protecting your family's health. Built-in 3600mAh lithium battery: The battery has a long service life, which is different from the traditional cooling fan plugging method. When you use the USB cable to fully charge this fan With water cooling, the water tank capacity of 3600mAh can power supply for a whole day (24H).