The Model H8535 Pro Audio is a 'surround-the-ear' type headset with advanced comfort and technology features. Provides crisp, clear communication and excellent sound quality. Ideal for broadcast, sound studio and front-of-house pro audio applications.5-foot extended coil cord with 4-pin male XLR connectorM-2H dynamic microphone, 150 ohms, ensures clear, crisp voice transmissionFull flex boom makes for precise, 'one-touch' microphone placementTwo 60 ohm, 20-20kHz Earphone Elements, wired in parallelSoft, foam head pad and undercut comfort-gel ear seals provide outstanding comfort during long hours of useAdjustable, lock nut stirrup assembly for secure, personalized fit with minimal clamping pressureBlack matte, non-reflective hardwareRugged, reliable construction without sacrificing personal comfortNoise Reduction Rating (NRR): 23 dB