Evaporative Cooling Technology: The portable air cooler sucks in hot air, cools it quickly through water evaporative cooling, provides humidified and cool air for your personal space, adjustable multi-directional air outlet design, if you add ice water, it will effectively cool the hot air around you. 3-Block Wind Speed Adjustment: 4-in-1 multifunctional design, not only a cute air cooler, but also a mini fan, humidifier, LED decorative lights, colorful circulating 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 are reading in the library, you don't have to worry about the sound disturbing you and the people next to you. Built-in 3600mAh lithium battery: The battery has a long service life,