Howard Leight by Honeywell Classic Green Impact Sport Sound Amplification Electronic Earmuff with Clear Lens Safety Eyewear Bundle includes Howard Leight by Honeywell Impact Sport Sound Amplification Electronic Earmuff, Classic and Sharp-Shooter Safety Eyewear, Clear Lens (R-03570) Built-in directional microphones amplify range commands and other ambient sounds to a safe 82dB, providing more natural listening and enhanced communication Actively listens and automatically shuts off amplification when ambient sound reaches 82 dB; Noise Reduction Rating (NRR): 22 Includes AUX input and 3.5mm connection cord for MP3 players and scanners 9-base wraparound uni-lens style offers maximum protective coverage and superior peripheral vision; soft, elastomer browguard diffuses impact while providing comfort at all key points