For use with H251, H251N, H261, H261N in loud environments

Plantronics 92499-01 circumnaural ear cushions are used on the SupraPlus line of headsets for customers in loud environments.  The original foam ear cushion is removed and the circumnaural ear cushion snaps onto the speaker of the SupraPlus.  The leather cushion goes around your ear sealing off background noise and making it easier for the user to hear.