Since the O2COOL 10" Battery or Electric Portable Fan has a flexible design, it can be tilted different degrees to get the air flowing in the desired direction. Plug in with the AC adapter (not included) or use six D batteries (not included) for up to 40 hours of battery life Powerful 2-speed 10" blade Convenient built-in handle and a stable horseshoe base Portable battery-operated fan tilts for directional airflow Compact, folding design makes it ideal for travel and easy to carry and store Battery-operated personal fan has a collapsible design