Cut and dry, the Audio-Technica PRO 8HEcW headset is a 'no bones' get the job done, dynamic headset for professional quality vocal pickup with hands-free operation. It's Hi-ENERGY® neodymium element will yield crisp sound reproduction and put your vocal right out in front where it belongs! It features a 4-Pin HRS Connector for use with the A-T UniPak wireless transmitters. Professional quality vocal pickup with hands-free operation Hi-ENERGY® neodymium element for crisp sound reproduction Low visibility headband provides stable, comfortable fit Pivot mounted flexible mic boom descends from left or right side 7.2' (2.2 m) cable permanently attached between microphone and 4-Pin HRS connector for use with UniPak wireless transmitters ransducer (Neodymium) Dynamic Polar Pattern Hypercardioid Frequency Response 200 Hz - 18 kHz Power Requirements None Dynamic, Requires No Phantom or Battery Power Output Impedance 600 Ohms Output Connectors Locking 4-Pin HRS Connector, (for Use with A-T UniPak™ Wireless Transmitters) Pad None Low Frequency Roll-Off None Applications Stage Vocals, Announcers, Lecturers, Aerobic Instructors Dimensions Headset: 4.72" (120.0mm) Nominal at Widest Point Flexible Boom: 3.17" (80.5mm) Long Microphone: 0.80" (20.4mm) Diameter Cable: 7.2' (2.2 m) Long Weight 2.1 oz (60 g)