RadioWorks Product Detail David Clark MODEL H3440 Behind-the-Head Style (BTH) Features Specifications Documents 36″ straight cord Boom rotates 200° for left or right placement BTH style for applications requiring hard hats or protective headgear Contoured, undercut ‘Comfort-Gel’ ear seals for maximum comfort Flex-wire boom for easy, ‘one touch’ microphone placement Noise Reduction Rating (NRR): 23 dB Noise-Cancelling M-7A amplified electret microphone Rugged construction No additional specifications are available for this product Brochures3400 SERIES BROCHURE Are you ready to get to work? Get in touch and find out how RadioWorks can help your business. (800) 591-5525