O2Cool 5--Inch Portable Fan - Volcano -O2COOL's fans include a range of sizes, multiple power source options, patented fan blades for efficient operation and compact designs that allow you to take the cool anywhere you are. Powerful two-speed fan offers quiet coolingTilts for directional air flowCompact folding design makes it great for travel; easy to carry and storePerfect for office, camping and outdoor activitiesUses 2 D batteries (not included)Blade size: 5 inchesNumber of speeds: 2