?Evaporative Cooler?This air cooler adopts the latest evaporative cooling technology, draw in hot air and pass it through a wet filter, which then exits the other side as cool, refreshing air. Extremely low energy consumption, environmental-friendly. ?3 in 1 Use?This portable air conditioner fan cooler can cool, humidify and purify the air around you. Wind speed can be adjusted in three stalls. Freon free, it’s convenient to use it anywhere ?LED mood Light?The built-in LED mood light can be set to any of its 7 color option, or set to color-cycle mode or turned off with the touch of a button, can be used as a soothing night light ?Easy to operate?Simply fill with water, plug it into USB port and the cooler fan will start blowing. Built-in water tank lasts up to 6-8 hours. ?Widely Use?Affordable, portable, and efficient alternative to an air conditioning unit as well as an efficient replacement for a fan. This space-saving air cooler can fit nicely in work spaces, dorm rooms, offices and more. You can take it out for camping, travelling for its lightweight design. Portable size: 5.7”X 5.7”X 5.8”