??3 Adjustable Speed and LED lights?Three-speed evaporative air cooler could meet your different needs and be applied in various occasions. You could enjoy low speed when you are in sleeping and medium speed in relaxing, as well as high speed in scorching summer. ??Humidify & Purifier?With function of humidification and air purification, this air cooler can cut down the temperature from air vent and raise relative humidity, prevent air drying. Let the fresh air massage your nose better. ??Portable 1m USB Connection?Very Easy to Carry & Move, built-in water tank, once full, can last for more than 8 hours, which is convenient to take it to any place,even outside when your family go for an vacation. Lengthen USB line allows you using more convenient. The main plus of portable mini air conditioner by. ??ECO-FRIENDLY?Using process mute,This mini air conditioner is Low energy consumption as a Simple Small Circular Fan,Much Cheaper Than Running a Air Conditioner in Hot Summer Days. Our air conditioner works from USB therefore it is very convenient to use it in a workplace. You can connect it to office computer and enjoy a cool in hot day. ??Quiet Work?If you work and want to be concentrated, you don't need to suffer from the heat because you don't want to be distracted by the irritating noise.