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 48k Hz 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).