Cisco Headset 500 Series. Connection to device: DECT, RJ-9, USB. Wearing style: On-Ear, Headband style: Over-the-head, Wearing mode: Duo. Suitable for: Office, Call Center, Home Office. Microsoft certification for: Compatible (not certified). 9 hours of talk time. On-ear controls: Enjoy easy access to key call management functions, including answer call, end call, decline, hold/resume (for multiple calls), mute, volume up, and volume down. Includes standard base. Vibrant sound quality. Experience powerful sound while listening to music or during meetings, and be heard everywhere thanks to the unidirectional microphones that focus on your voice. Stay productive. Remain focused even in busy, open work environments with outstanding noise isolation and a sleek form factor for all-day comfort. A range of wired and wireless models in single or dual ear configurations provides the perfect solution for every user. A magical experience. Quickly ready to use with simple and intuitive setup. Automatic software upgrades, diagnostics, and metrics simplify device management for IT. Work where you want. Wireless models offer crystal-clear sound over a DECT connection with a range of more than 90 meters from the base station. Optional multibase allows switching between up to four audio devices via USB or Bluetooth. Proven reliability. Say goodbye to compatibility issues. Cisco headsets are designed with comprehensive integrations for Cisco IP phones, Webex DX80, Jabber, Webex Meetings, and Webex Teams, simplifying IT work with a centralized administration area.