These Howard Leight Impact Pro shooting earmuffs carry an impressive 30 decibel noise reduction rating, reflecting their high quality. A rugged ear cup design paired with rubberized pressure points amplifies low level noise, and an auxiliary cord compatible with MP3 players and smartphones completes the package. Features External audio jack connects to any music or audio source input connection cord included Amplifies low level sounds more than 4 times Directionally placed stereo microphones amplify low-level sound while blocking harmful impulsive noises over 82 decibels Aggressive earcup design and rubberized pressure points for added durability 4 hour shut off feature extends battery life Single knob control for on/ off and volume control External battery compartment with easy to remove cover Low energy consuming earmuff runs on 2 AAA batteries included Soft padded headband offers adjustable fit and comfort Air Flow Control Technology AFC enables you to h These Howard Leight Impact Pro shooting earmuffs carry an impressive 30 decibel noise reduction rati A rugged ear cup design paired with rubberized pressure points amplifies low level noise, and an au Features External audio jack connects to any music or audio source input connection cord incl