Cool design of this desk fan. Unique shaped like a airplane with durable soft fan blades, keep you free from injuries. Not only can be powered by USB cable and also can be used by AAA batteries.This nifty airplane-inspired Desk Fan will keep your cool while you are slaving away surfing the internet The fan plugs into the Notebook or Desktop USB port and has soft "propeller" That’s desiged to not slice your digits off if you happen to get in its way The little aircraft isn't built to be aerodynamically sound since it stand on of your desk. Cool USB Fan also can be powered by battery Battery Operated Fan uses 2AAA batteries(not inclued) Unit size: 12.2 x 10.7 x 4.5cm approx.  China supplier:Email : fangzhengcn@hotmail.com Skype ID : chanceller819