Motorola PMMN4013 Remote Speaker Microphone

The PMMN4013 is a remote speaker microphone for Motorola's CP185, CP200, CP200 XLS and PR400 radios.

Motorola's accessory catalog gives it a six-foot coiled cord assembly, a swivel clip and a quick disconnect latch, and describes the windporting feature as reducing background noise from high wind. Windporting is the specification that matters outdoors: a microphone that hears the wind rather than the speaker produces transmissions nobody can act on, and no amount of volume at the other end fixes it.

The practical effect of a remote speaker microphone is that the radio stays holstered. A user who has to reach for their hip to answer is a user who misses calls, and the quick disconnect means the microphone can come off without unthreading anything.