Perfect for indoor and outdoor activities, use in a hot office or school, on a picnic and especially during a power outage. Plug-in AC adapter or use 6-D batteries (not included). Powerful two-speed 10-inch fan offers quiet cooling. Tilts for directional airflow. Included LED sidelights with 3 levels of brightness. Great for travel, camping and being outdoors. Battery life varies by type of batteries used. High speed – 20 hrs/Low speed – 53 hrs