Poly Blackwire C3215 Headset - Mono - Mini-phone (3.5mm), USB Type A - Wired - 32 Ohm - 20 Hz - 20 kHz - Over-the-head, Over-the-ear - Monaural -.

Mono Mini-phone (3.5mm), USB Type A Wired 32 Ohm 20 Hz 20 k Hz Over-the-head, Over-the-ear Monaural Supra-aural 7.40 ft Cable Noise Cancelling Microphone Black