Cool off with the O2-Cool FD5004N0000 5" Portable Battery Powered Fan. This Battery Operated Desk Fan needs just two D batteries (not included) to give you the breeze you need to stay cool while you work. The compact design folds up, making it easy to take with you on the go. Battery operation means there is no electricity needed, so this fan can be used virtually anywhere. The quiet operation won't bother your neighbors at work, and the two speeds allow you to choose how much air is being moved. This Portable Battery Operated Fan makes a smart addition to a desk at work or at home.