Poly
Poly Blackwire C520-M - 500 Series Over-Ear Headset
The Poly Blackwire C520-M is a high-performance, over-ear headset designed for professional use. It offers crystal-clear audio and a comfortable fit, making it ideal for call centers and other collaborative work environments. Features include noise cancellation, inline controls, and a durable design.
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Updated on May 22, 2026
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