Portable usb hanging neck electric fanPortable USB Hanging Neck Electric Fan Double Hanging Neck Hand Holding Small Fan Cooling Fan Air Cooler.- Innovative Fashion Design Appearance -The appearance of the fan is based on the shape of the earphone and the body curve, which not only satisfies the sense of comfort, but also has a strong sense of fashion design;-Hidden Air Duct Design Quickly Reduces The Heat -The strong wind design of the turbine is adopted, and the design of the vertical air duct converts the horizontal air duct into a vertical air duct at a right angle, and the cool wind is directly from the bottom to the top, forming a cool wind wrapping area for the head, which concentrates the wind and quickly cools down.;- Fibonacci Wind Channel,Less Loss -The Fibonacci technology is the basis of many harmonious patterns in nature, also known as the golden section. The air duct of the turbo fan uses this principle to make the air duct loss smaller, the wind power greater and quieter;- Built-In Rechargeable Battery -Built-in lithium battery, can be used for 2 hours in the first gear, 3 hours for the second gear, and 5 hours for the third gearSpecification :Material:ABS;Color:Pink / Green / Dark Green;Weight:192g;Size:229 x 218 x 25mm;Input:5A = 1A max;Wind Speed:3 Level;Power Supply:USB Charging;Using Time:2-5 Hours;Package Included:1 x USB Fan1 x USB Cable