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3M Pro-Comms Electronic Hearing Protection with Bluetooth Wireless Technology and External Microphones, Bluetooth Headphones, NRR 26 dB - - Amazon.com
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3M - Hearing Protection/Communication; Headset Type: Communications Headset; Noise Reduction Rating: 27.0 dB; Noise Reduction Rating (dB): 27.0 dB; Radio Type: Bluetooth; Band Position: Three Position; Cup Color: Royal Blue; Other Compliance
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Amazon.com: 3M Bluetooth WorkTunes AM FM MP3 Radio Headphones - Wireless Hearing Protector by The ROP Shop : Electronics
3M PELTOR Headset: Over-the-Head Earmuff, 26 dB NRR, 3.5mm Stereo, Listen, Red, Foam, Alert - 481Z32|M2RX7A2-01 - Grainger
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