Motorola EVX-S24 Remote Speaker Microphone

The Motorola MH-66F4B is a submersible and dust proof Remote Speaker Microphone (RSM) for the EVX-S24 and EVX-S30.
Built in noise cancelling technology reduces crowd or machinery noise so your voice comes through loud and clear when you speak directly into the microphone.
It easily clips onto a shirt or collar, allowing you to speak and listen without having to reach for your radio and features a built in 3.5mm audio jack allows discrete communication with optional earpieces.

AAE46X509, MH-66F4B