Cisco Headset 522 Wired Dual On-Ear 3.5 Mm Headset With Usb-A Adapter Charcoal 2\n\nCisco Headset 522, Wired Dual On-Ear 3.5 mm Headset with USB-A Adapter, Charcoal, 2-Year Limited Liability Warranty (CP-HS-W-522-USB=). Product type: Headset. Connectivity technology: Wired. Recommended usage: Office/Call center. Headphone frequency: 50 - 18000 Hz. Product colour: Black, Grey The Cisco Headset 500 Series is a professional range of wired and wireless headsets optimized for Cisco IP phones and soft clients.\nThese headsets are designed for workers in open work spaces so they can be more productive. They feature vibrant audio, powerful noise isolation, and exceptional comfort.\nProduct overview\nThe Cisco?- Headset 500 Series delivers surprisingly vibrant sound for open workspaces. Users can stay focused in noisy environments with rich sound, exceptional comfort, and proven reliability. The 500 Series offers a lightweight form factor that is comfortable to wear, even for an entire workd;