Perfect for indoor and outdoor activities, use in a hot office and especially during a power outage. Multiple power source options, patented fan blades for efficient operation and compact designs that allow you to take the cool anywhere you want to go.• Powerful 2 speed 10-inch fan blade• Convenient built-in handle • Compact design makes it great for travel; easy to carry and store • Perfect for office and home • Up to 40 hours of battery life.Specifications• Blade size: 10 inches• Number of speeds: 2• Number and Type of Alkaline Batteries: 6 D-Cell batteries• AC Adapter: Included• Product Dimensions (retail packaging): 3.94" x 11.81" x 13.11".Product Care• For best performance, always use fresh alkaline batteries. Do not mix old and new batteries. Do not mix alkaline, carbon-zinc or rechargeable battery types• There is a risk of leakage from the batteries if they are installed incorrectly. Please follow the instructions• When storing the fan for more than 2 weeks, please remove the batteries and ensure the fan is in the "œoff"� position• Clean only with a dry cloth. Do not allow water to drip into the fan. FAQ''s• If fan does not operate, verify batteries or supplied adapter are installed correctly and that nothing is obstructing the fan blade.Additional Info• Three power sources: Plug-in with the AC adapter (available for purchase), use with 4 AA-Cell batteries (not included), or included USB cable.