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Amazon.com: Plantronics Blackwire C3215 Headset - Mono - Black - USB Type A, Mini-Phone - Wired - 20 Hz - 20 kHz - Over-The-Head - Monaural - Supra-aural - Noise Cancelling Microphone (209746-22) : Electronics
![Amazon.com: Plantronics Blackwire C3215 Headset - Mono - Black - USB Type A, Mini-Phone - Wired - 20 Hz - 20 kHz - Over-The-Head - Monaural - Supra-aural - Noise Cancelling Microphone (209746-22) : Electronics Amazon.com: Plantronics Blackwire C3215 Headset - Mono - Black - USB Type A, Mini-Phone - Wired - 20 Hz - 20 kHz - Over-The-Head - Monaural - Supra-aural - Noise Cancelling Microphone (209746-22) : Electronics](https://m.media-amazon.com/images/I/61-E+vIqn0L.jpg)
Amazon.com: Plantronics Blackwire C3215 Headset - Mono - Black - USB Type A, Mini-Phone - Wired - 20 Hz - 20 kHz - Over-The-Head - Monaural - Supra-aural - Noise Cancelling Microphone (209746-22) : Electronics
![Amazon.com: Plantronics Blackwire C3215 Headset - Mono - Black - USB Type A, Mini-Phone - Wired - 20 Hz - 20 kHz - Over-The-Head - Monaural - Supra-aural - Noise Cancelling Microphone (209746-22) : Electronics Amazon.com: Plantronics Blackwire C3215 Headset - Mono - Black - USB Type A, Mini-Phone - Wired - 20 Hz - 20 kHz - Over-The-Head - Monaural - Supra-aural - Noise Cancelling Microphone (209746-22) : Electronics](https://m.media-amazon.com/images/I/61Guc0eq9PL.jpg)