The Cisco Headset 500 Series is a professional range of wired and wireless headsets optimized for Cisco IP phones and soft clients.&lt;br /&gt;&lt;br /&gt;These 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.&lt;br /&gt;&lt;br /&gt;The 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 workday. Its designed for workers who spend a lot of time wearing headsets for voice communications and listening to music.&lt;br /&gt;&lt;br /&gt;- Lightweight comfort that is ideal for extended wear&lt;br /&gt;- Premium sound in a sleek form factor  great for music and voice communications&lt;br /&gt;- Powerful noise isolation with unidirectional microphones that are designed to hone in on the users voice and simultaneously minimize background noise&lt;br /&gt;- Easy intuitive user configuration experience when used with Cisco IP phones*&lt;br /&gt;- Extended Digital Enhanced Cordless Telecommunications (DECT) range (300+ feet) with wireless models&lt;br /&gt;- Flexible options for connecting to devices: various models support USB RJ 3.5 mm DECT and Bluetooth connections&lt;br /&gt;- Proven reliability and integrations for Cisco IP phones Cisco DX Series endpoints and Cisco soft clients&lt;br /&gt;- Easy device management and automatic firmware upgrades when used with Cisco Unified Communications Manager*