O2COOL 1095 Portable Plus 10-Inch Indoor/Outdoor 2-Speed Battery/AC-Powered Fan Indoor/outdoor 10-inch portable battery-operated fan Uses 8 D-cell batteries or 12-volt battery pack (not included) Quiet operation; 2 speed settings; sleek modern design AC adaptor included for indoor use only Measures approximately 4 by 12 by 17-2/7 inches