Evaporative Cooling Technology: The portable air cooler draws in warm air, cools it quickly through water evaporative cooling, provides humidified and cool air for your personal space, air outlet design multi-directional adjustable, 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, humidifier, LED decorative lights , circulating colorful 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. It is very quiet (36db), 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. Energy saving and energy saving A+++ Energy: Contains no harmful refrigerants and doesn't use a compressor like traditional energy-guzzling air conditioners, this small air cooler works for you with a rated power of 3W, which is very energy efficient compared to the air from the windows. power conditioners while protecting your family's health. Product Specifications: Product Name: Quiet Energy-saving Air Cooler Fan Noise: Less than 36dB Material: ABS + Electronic components Power source: lithium battery/USB Product size: 178*136*93mm Product color: pink, white powder, green Rated voltage: 5V Speed Control Sprocket: 3 speed Shake your head: shake your head up and down Air supply method: turn the page Product packaging: Quiet energy-saving air cooler fan USB power 1 piece White color Shipping quantity: 1 piece