Evaporative Cooling Technology: Portable air cooler draws in hot air, cools it quickly through 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 nice air cooler, but also a mini fan, a humidifier, LED decorative lights, circulating colorful atmosphere 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. It is very quiet (40db), even if you read in the library, you don't have to worry about the sound disturbing you and the people next to you. Economy Energy Saving & Energy Saving A+++: Contains no harmful refrigerants and does not use a compressor like traditional energy-consuming air conditioners, this small air cooler works for you with a rated power of 3W, which is very energy efficient compared to window air. power conditioners while protecting your family's health. Built-in 3600 mAh lithium battery: The battery has a long service life, which is different from the traditional fan plug-in method cooling. When you use the USB cable to fully charge this water cooling fan, the water tank capacity of 3600 mAh can power for a whole day (24 hours). Sold by grid cool store