The WildEar Master is built for the shooting sportsman. Whether in a treestand or at the range, the WildEar Master provides the most advanced technology in hearing protection and enhancement on the market. They protect your ears from extreme noise and gun blasts, and also provide hearing enhancement for safety and communication. WildEar Master includes 4 digital hearing enhancement programs. Each set is custom fit using digital technology to ensure all-day comfort and superior fit.