Portable Air Conditioner and Mist HumidificationPortable air conditioners works great, just add some ice/water, long press the wind speed button for 3 seconds, and you will get a regular mini portable ac unit. It is not only a personal air cooler but also an air humidifier. You can use the small evaporative portable ac all year round to cool you down in hot summer and humidify the air in dry fall and winter. The filled water tank can keep spraying for 2.5-10 hours (depending on the speed). Portable Mini Air ConditionerBuilt-in high-capacity batteries, not limited by power cords and outlets, portable and usable anywhere! Our personal air conditioner is perfect for home (kitchen, bedroom, living room), office and camping and other outdoor activities. USB charging socket, can be rechargeable to use, can also be plugged in to meet your different needs. Mini air conditioner is easy to charge with charging head, computer USB, mobile power and car USB. Keep Cool and ComfortableOur 500ml portable mini ac unit can be used overnight (8 hours) (depending on the speed) without the need for frequent replenishment of water or ice water. Your portable air conditioners sounds only 36 decibels and continuously sprays cool air for hours, keeping your body cool at night and creating a comfortable and low-noise sleeping environment. The wind direction can be manually adjusted up and down within 15C to choose the angle you want. Eco-Friendly & Energy SavingThe portable air conditioners runs on low energy consumption, the room air conditioners only requires 25W power, no need to worry about high electricity bills, much cheaper than running a Freon air conditioner. This mini air cooler fan uses water to naturally cool and humidify the air without the use of refrigerants or chemicals. Note1.Before cleaning the unit, please power off the unplug the appliance. 2.Do not touch the power supply or power cord with wet hands. 3.This fan is for personal use and cannot cool the entire room, please do not place it too far from you.