This portable bladeless desk fan sits right on your desktop and powers via your computer’s USB port, providing smooth, quiet airflow with unique cooling capacity ... and no noisy, dust-collecting blades! Desk fan features simple one-touch operation, pull-out adjustable angle stand and unique sponge you can dampen and freeze for cooling personal AC! Bladeless fan includes USB cord; also works with 4 AAA batteries if desired (not included). Plastic. 3 3/4" long x 1 3/4" wide x 6 3/4" high.