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. It’s designed for workers who spend a lot of time wearing headsets for voice communications and listening to music. Enhanced mobility The DECT technology provides freedom to roam hundreds of feet from the base with crystal-clear audio. On-ear controls Enjoy easy access to key call control capabilities,including answer,end call,hold/resume (for multiple calls),mute,volume up,and volume down. Full security AES-128 encryption ensures secured communication. Music mode Full-band audio provides premium 48kHz audio experience. Multi-mode audio Automatically provides the best available audio experience in call mode (narrowband or wideband) and in music mode (wideband or full band).