Fastest 18V personal fan. Cooling air speed up to 20.5 MPH and 850 CFM. 300-Degree head rotation. Brushless motor. Variable speed dial for optimized airflow. 7" Blade diameter. 3+ Hours of use on high and 6.5 hours at 75% speed. Impact water and dust resistance. Keyholes pass-through holes and PACKOUT connectivity for various mounting options. Integrated AC plug for extended runtime. Fan only - battery sold separately.