"· Up to 16-hours on low with the included POWERALL 24V 2.0Ah battery · 5-speed settings allow you to choose air flow ranging from 665 CFM to 785 CFM and airspeeds up to 2,600 RPMs · Perfect for jobsites, garages, patios, home, camping, and more! 360° rotating head to easily rotate fan’s angle for desired comfort Compact, lightweight design for easy portability and hybrid performance allows you to operate wirelessly or plug into a power source Includes POWERALL 24V 2.