USB Desk Fan, your biggest little fan! 360 degree adjustable angle. Can be used with a power bank to cool off anywhere, or with a USB adaptor (wall or car), it can also be used to plug into any computer (laptop or desktop) that has a USB port. 4" Fan blades and 42" USB cable. Perfect for your desktop, at the office, a college dorm room, kid's room, car/road trips and more! 6 fans per tray. 2 each of the following colors: Red, Blue, and Black.