Air Conditioner Fan:True wireless and portable design,small size,which won't take up a lot of space and can easily carry to anywhere,Its the perfect small air conditioner for dorms, apartments,cabins,campers,offices,bedroomsBig Capacity :250ML Large Water tank can be used for 5-6 hours When fill it up. Cold air can be sprayed continuously for several hours to keep the body cool at night for a good sleep. With mobile power supply,4-6hours working time via 20000mAh power bank, don't worry about power failureMist Sprayer Function& 3 Speed Wind Mode:The air cooler features with 3 wind modes(Low/Med/High),Personal air conditioner cooler, fan,air humidifier,3 in one multifunction design take you away from the hot summer,enjoy your cooling summer