Quick disconnect cord enables hands-free headset use for uninterrupted communication
Adjustable hearing and voice volumes for personalized call clarity
Microphone mute function allows conversation privacy while maintainingcaller audio
Compatible with 98% of office desk phones for broad usability
Includes two AA batteries for immediate use
Summarized by Shop
The Poly M22 amplifier base is a durable and very reliable headset amplifier base designed for use with Poly H series headset tops. Not all phones have a headset port so the M22 allows use of a wired headset for those models that don't have this port. The short coil connector cord plugs into the handset port of the phone and the headset t