EncorePro 500 Series - Smarter headsets for contact centers | Poly, formerly Plantronics & Polycom
Smoothtel - Plantronics EncorePro HW520 Headset: - Binaural headset to help you hear in noisy settings - Newest business-grade series weighing only 74 grams - Noise-canceling mic for average to loud environments -
Plantronics HW510 and HW520 Wired Headset Setup Guide