The Vortex Fan features a high speed motor which quietly extracts humid air from inside the goggle and exchanges it with cool air in seconds! The Vortex features a 2-way switch to either blow air in or draw air out of your goggle. Built to be shock proof as well as water resistant, one AAA battery delivers over 30 hours of operation. The Vortex Fan is easy to install and disassemble for cleaning and fits most Elite & Spectra goggle systems. Battery included.