The DEWALT 20V Max Cordless Jobsite Fan DCE511B is a brand new portable ventilation fan suitable for both indoor and outdoor use. It features a timerless operation, 3 different speeds for customizable comfort, a cordless power source for convenient use on the job site, and a brushed yellow finish for durability. The fan has a compact round shape with a handheld design, making it easy to carry and use in any room. With a 20V voltage and 3 blades, this DEWALT fan delivers effective and quiet cooling with an operating sound rating of 30 dB.