It has the following features: quad-core power, whole wind output,  foldable,  super long battery life, wearable,  mute Stronger wind, faster heat dissipation Air pressurization technology gathers wind more powerfully 60 four-turbine blades, 12 times larger air volume, instantly cool The fresh and soft wind fully covers the upper body and face, while keeping the wearing place cool and sweat-free Equipped with 4000mAh lithium battery, safe and not hot Type-C/USB-C interface, fully charged in 5 hours, optimized circuit design, fully exerting battery performance Prevent hair twisted in, long hair can also be used with confidence, 1mm mesh air inlet Foldable design, put it in the bag, does not take up space, lightweight, no burden to carry Free turning and twisting, suitable for big and small necks, the connecting shrapnel is tough and durable Specification: Battery capacity: 4000mAh Power supply mode: Type-C cable/built-in lithium battery Input current: 1.8A Rated power: 3-9W Rated voltage: DC5V Function: Folding storage/hanging neck/long battery life/brushless motor/portable Material: ABS+Silicone Dimensions: 109 x 223 x 77mm Net weight: 360g