Replacement Ear Cushions Compatible with Poly 4220 and 4320, A Protein Leather Outer Construction, Perforated Faces, Model-Specific Pair for Both Headset Sides

Smart Cancellation: Equipped with cancellation, the effectively reduces for enhanced calls and music immersions, ideal for open offices and public transport Broad Device Compatibility: Suitable for multiple devices and operating systems, these headphones enable pairing and seamless switching, simplifying daily use for modern users All Day Comfort Wear: Featuring protein leather and sponge materials, the headphones comfort for extended wear without pressure or discomfort, ideal for offices professional and remote workers Better Experience: Built with advanced technology, these headphones deliver clear call quality and rich sound detail, perfect for audiophiles and professional in noisy environments Convenient Control Interfaces: onboard buttons allow easy volumes, call handling, and more without reaching for your phone, boosting efficiency for busy professional