Slim and lightweight USB fan keeps you cool on hot days USB with mobile power supply, plug and play, strong wind, quiet and silent, keep the summer heat away Simply connect to one of your laptop's USB ports, flexible And the adjustable gooseneck directs the breeze to blow in the exact direction you want The flexible and adjustable gooseneck directs the breeze to blow in the exact direction you want Product Name: USB portable fan. Instructions for use: USB plug and play Output: DC5V/A Product features: any bending angle Color: White Material: plastic Size: 75X202X28mm Package Contents: 4 x USB fan Only the above package content, other products are not included Included. Note: Light reflection and different displays may cause the color of the item in a little different from the real thing. The measurement allowed error is +/- 1-3 cm.