TCO Certified is the world’s most comprehensive sustainability certification for IT products, helping you make responsible product choices that drive the industry in a sustainable direction. Using TCO Certified also supports your organization’s efforts to reduce risk and take the next step in social and environmental responsibility. TCO HP Poly Blackwire 5220 Stereo USB-C Headset +3.5mm Plug +USB-C/A Adapter, Wired, Calls/Music, 20 - 20000 Hz, 300 g, Headset, Black HP Poly Blackwire 5220 Stereo USB-C Headset +3.5mm Plug +USB-C/A Adapter. Product type: Headset. Connectivity technology: Wired. Recommended usage: Calls/Music. Headphone frequency: 20 - 20000 Hz. Weight: 300 g. Product colour: Black