Excellent calls for the call center. Connection to the device: QD. Wearing style: On-Ear, wearing type: Overhead band, wearing mode: Duo. Suitable for office and call center use. Microsoft certification: No. Seven adjustment options. Clear and natural sound. Lightweight yet sturdy construction. The Plantronics headset is ideal for all-day use. It features a very lightweight and comfortable design that is also very durable. Overall, the headset offers seven different adjustment options, ensuring maximum comfort even during extended use. The wideband frequency range also provides optimal, very clear, and natural sound as well as improved voice transmission.