3 pcs OPCC Summer Essential Mobile USB-Powered Portable Fan,Super Strong Wind with Low Power Consumption,Quiet Fan for Power Bank/notebook/laptop/computerPack of 3 LIGHTWEIGHT,PORTABLE,DETACHABLE AND POCKET-SIZE -- The USB mini fan is of detachable design, and it is lightweigt and pocket-size, easy carrying and using, especially while traveling anywhere at any time. SUPER WIND SPEED,SUPER ENERGY SAVING,SUPER QUITE-- Up to 5-speed wind(7m/s),making you cool and be full of go; Up to 250 hours continuous service life;Maximum noise is only 25.8db(as quiet as a breeze). STANDARD USB PORT -- It can be used on any mobile digital devices, just like power bank, laptop, notebook, car charger and other devices with USB port. MTERIALS OF ENVIRONMENTAL AND SAFETY -- The fan is made of materials of high quality silicon, which is environmental and safty. FLEXIBLE AND ADJUSTABLE GOOSENECK -- directing the breeze to blow into the exact direction as you desired.