Master the Wind with This Incredible Dual Powered Windblaster Fan! 2 Speeds hi/low Indoor/Outdoor Use Super Quiet Operation Made from Heavy Duty ABS Plastic. 9-1/2" Blade Diameter Kickstand for Stability Superior Grill, Shroud and Patented Blade Design Creates Tremendous Air Distribution Operates on 8 "D" Batteries (not included) or AC Adapter (included)