NoiseBuster PA4000 Over-the-Head ANR Safety Earmuffs
- On/off switch and power indicator
- Stereo input 3.5 mm audio jack
- Active noise cancellation – up to 20dB– 20Hz to 800Hz frequency range
- Up to 65 hours of use on a single AA battery
- Adjustable, comfort-fit headband
- Resistant to water and moisture, contaminants, mechanical shock and vibration
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