The mini air cooler is easy to carry and easy to use. 3-speed, 7-color LED light can be used in office, bedroom, study or outdoor, you can enjoy fresh and cool air in hot weather and sultry space. You only need to add water to the built-in water tank. It is recommended to use ice water to achieve a better cooling effect. Plug it into a USB or mobile power supply to use. The mini air cooler has 7 kinds of soft color options of LED light, which can be used as an atmosphere light or night light in a dark environment. Portable mini design: Our multifunctional three-in-one design mini air conditioner, portable USB air cooler is compact, portable and can be moved easily. It has 3 speeds to meet your needs for different wind speeds. You can use it in the office, bedroom, study, living room, outdoor or camping and other places. Fast and efficient cooling: just add water (ice water is the best) to the internal filling tank, and then press a button to transform into cool and fresh air. Energy saving and electricity saving: because of its small size, no fluorine air conditioning, can reduce consumption, but the effect is good. Is your perfect, cool and energy efficient choice in hot weather.