Filter out industrial noise while amplifying voices without pushing any buttons

• Excellent for continuous-noise environments
• Each muff has its own microphone and volume control
• Includes a 3.5mm listen-only audio jack
• NRR 25 dB

Made specifically for continuous-noise environments, these Noise Reduction Rating 25 dB earmuffs suppress sounds exceeding 82 dB, while greatly improving your ability to hear normal speech around you. Each muff has its own microphone and volume control to amplify weaker sounds. Includes a 3.5mm listen-only audio jack and two 1.5-volt "AAA" batteries that provide 175 hours of use under normal circumstances. Earmuffs also have an auto shut-off feature that turns off the headset after four hours of continuous use to conserve battery life. Imported.