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3 in 1 Portable Evaporative Air Cooler, Humidifier and Purifier Works via any USB power supply. It can be run by using a laptop, a power bank or a wall outlet. You just need to fill the tank with water, then plug it into a power source and enjoy refreshing, cooling air! Features: 5W of electricity, energy-efficientBuilt-in water tank lasts up to 24 hours Freon free, energy efficient & eco-friendlyCompact & powerful & ultra-quiet operationWhat's in the package: 1 x Air Cooler1 x USB Power Cable1 x Instruction guideNoteUsually we ship in 1-2 days,10-20 business days you will receive your purchase.Please contact us if you cannot receive the order after 30 days. The error of measurement within 1-2 cm is normal . Meanwhile, please be reminded that due to lighting effects, monitor's brightness / contrast settings etc, there may be a little difference in the color of the pictures and the actual item.The package contains only this product, does not contain any decoration items involved in the picture.