RTAKO original Five-core Portable Neck Fan USB Hanging LED Digital Display Leafless Mini rechargable Electric Cooling Fan rechargeable 4000mAh BP626

5 first-of-its-kind technologies, only one in the entire network. The first of its kind on the entire network true five-core refrigeration system, The only one on the whole network, 30 times cooler than the old dual-core model . Blowing cold air up and down, Surging winds up and down, cooling down and super cool. Cooler than air conditioner! True five-core refrigeration system Principle of quasi-air conditioning refrigeration 5 wind wheels powerfully gather wind, compress and cool down to blow out cool air