Increases Hearing: Up to seven times by amplifying high frequency sounds with 48 decibels of power.
Protects hearing: Sound Activated Compression (SAC) circuit combined with ear plug helps protect hearing from loud sounds such as muzzle blasts. Noise Reduction Rating (NRR) of 29-31 dB is among the highest in the industry.
Weighs Less Than 1/4 oz.: Rest comfortably behind either ear, with or without eyeglasses.