Feature: 1. This product has a unique structure and novel style 2. Intelligent control, complete functions, simple operation, stable performance and safe use 3. The appearance is simple and elegant, the structure is firm, the volume is small, the weight is light, and it is easy to carry. It is a companion for travel and outdoor sports. 4. 3-speed wind speed: the third-speed adjustable, the first-speed breeze, the second-speed natural wind, the third-speed strong wind Specification: Fan blade: no blade design Material: ABS+PC Output power: 4.5W Input current: DC 0.5A /1A Output voltage: DC5V-9V Input voltage: DC5V Power supply mode: battery storage (a lithium battery), USB power supply Working time: 3 hours Charging time: 3-4 hours Color: green/white Size: 195*215*55mm Package Included: 1 * Hanging neck fan 1 * USB cable