Ear Protection Walker's Razor X-TRM FDEThis Walkers Razor X TRM FDE ear defender has a relatively compact design, but it does offer maximum protection for your hearing. It has two hi gain omnidirectional microphones that register ambient sounds. Those sounds are then reproduced with crystal clear clarity through the HD speakers, which allow you to properly hear fellow shooters and animals in your surrounding area. With loud sounds such as gunshots the SAC (sound activated compression)