QD headset for desk phones. Connection to the device: QD. Wearing style: On-ear, Headband style: Overhead, Wearing mode: Duo. Suitable for office, call center, home office. Microsoft certification: No. Inline control. Acoustic protection. Dynamic mute. Equip your contact center teams with the Poly EncorePro 300 series headsets, providing everything they need. High-quality audio, all-day comfort, and proven durability. No compromises. You will find everything you need in a single contact center headset, tailored to your employees, your customers, and your budget. The Poly EncorePro 300 series offers reliability and comfort throughout the day, plus acoustic protection and voice optimization. This allows them to perform at their best throughout their shift. More clarity. Excellent sound quality and top-notch noise cancelling ensure clearer conversations. The result: satisfied customers enjoying an outstanding experience on the other end of the line.