YKS Portable USB Clip-on Fan 360 Degree Rotatation Desk Fan, White Multifunctional: Perfect for many summer outdoor outings, cutting grass, doing sports, camping and walking in sunny days or beauty in hot weather activities Usb powered: Powered via usb directly, convenient to charge with your computer, charging bank, laptop and any devices with usb input Portable & fashionable the YKS fan is totally portable, just put it in its case and clip it directly to any surface when you want to use it 360 degree rotation: The mini fan will swivel and angle up or down Adjustable & quiet: The revolving on/off button features makes it possible to adjust the wind mode as you like