For sale: Original Poly Blackwire C5220 headset Professional headset from Poly (Plantronics) model Blackwire C5220, suitable for meetings and remote work via Microsoft Teams, Zoom, and others. Specifications: * Model: Poly Blackwire C5220 * USB connection * High-quality microphone with noise isolation * Volume control and microphone mute from the cord * Clear sound and comfortable for long use * Condition: Used, in excellent condition and 100% functional