?What you get?2 years warranty. 24 hours after-sales service. If you have any questions, please feel free to contact the Elingmor customer service team. ?USB charging, 4000mAh battery, 4-8 hours running?Using USB power, it can be charged by computer, mobile phone charger, power bank, 4000mAh large capacity battery provides 4-16 hours working time (depending on different speeds). ?Portable and Quiet?The compact shape is convenient for you to use outdoors, and can be powered through the USB interface. Thanks to the design of the fan blades, the desktop fan can achieve high air volume and low noise, and can be used in the library. ?120° automatic head swing, 2-speed swing head adjustment, 4-speed air volume adjustment? Press the switch knob to turn on the automatic head swing function of the desktop fan. Avoiding direct blowing also increases the speed of indoor air circulation. You can also manually adjust the up and down 30° swing head. Rotate the switch knob to adjust the wind speed, a total of 4 gears. ?Large inclination fan blade and air duct design? The USB desk fan is equipped with a large inclination angle fan blade, which can condense stronger wind. The unique air duct design keeps the wind in a straight line, blowing out a long air duct, and you can feel cool in the distance.