The Comfort Zone CZ6USB 6-inch Oscillating USB - Battery Desk Fan, Black Dual Power Operation. USB Powered (cord included), Battery Powered (4xAA Batteries). Oscillation for wide coverage. Adjustable tilt angle. Use anywhere, with or without a computer Compact and adjustable base for desktop use. Perfect for campus use in libraries and study areas. 2-Speeds for comfort. Works with 5v AC adaptor (not included). Approved for sale in the US and Canada.