Champion Vanquish Electronic Hearing Protection was designed from the
ground up for the shooting sports. Each muff was acoustically modeled on
gunshot reports to achieve the optimal balance of all day comfort and noise
reduction. They feature Safe Level Sound Compression Technology with a
refresh time 1ms. Two Full Dynamic Range HD speakers ensure everything
you hear is crystal clear. Omnidirectional microphones pick up everything
around you, giving a natural sound while minimizing wind noises.