Product The portable fan has built-in USB charging, and the fan can be used directly after it is fully charged, no need to be connected to charge all the time. It can be charged by USB charger/laptop/mobile power/car mobile power. spiral, which favors a better distribution of fresh air in the room Day and night: at minimum power, this fan diffuses a powerful but perfectly silent jet of air Our small air conditioning system is environmentally friendly and energy efficient. You can use the USB cable to charge the battery. It is very convenient to carry the mini air conditioner with you. It can be used outdoors even if the whole family is on a business trip. This portable fan is suitable for family, kitchen, travel, outdoor activities, office, personal cooling, sports, running, sitting, reading and it is also a great personal table fan. Specifications 1. Material: ABS 2. Duration: 5h 3. 5V-1A input 4. Battery Capacity: 2000mAH 5. Product size: 179*92*89mm 6. Water tank capacity: 240ml Caution 1. Only add tap water or ice water, add ice cubes or ice water to get the best cooling effect. 2. Do not tilt the small air cooler when there is water. 3. Please allow some tolerance in manual measurement, the tolerance is about 3cm/1.18in. 4. Due to screen differences, the color may be different from what you expected, please allow it. Packing list: Air Cooler x1 USB cable x1