AM/FM/MP3 Digital Hearing Protec

Digital MP3/AM/FM Stereo Hearing Protector, Balance Comfort, Protection & The Ability To Listen To The Radio Or MP3 Player, Features Include: Noise Reduction Rating Of 21dB, Meets ANSI S319-1974 & CSA Z94.2-02, Class B, Retains 82dB Safe Noise Cut Off, Even With MP3 Player In Use, Automatic Radio Shut Off When MP3 Is Connected, Free Auxiliary Cord & 2 HeavyDuty "AA" Batteries.