Motorola PMMN4013A is a compact microphone that has a revolutionary windporting feature that helps lessen background noise from high winds and other severe weather conditions. Audio can pass through the speaker grill even when the microphone port is blocked by water. The coiled cord allows talking and listening without removal from belt or case. Includes Push-To-Talk (PTT) switch, swivel clip and quick disconnect latch.This compact microphone has a revolutionary windporting feature that helps lessen background noise from high winds and other severe weather conditions. Audio can pass through the speaker grill even when the microphone port is blocked by water. The coiled cord allows talking and listening without removal from belt or case. Includes Push-to-talk switch, swivel clip and quick disconnect latch. Compatible with: BPR40, CP100, CP150, CP200, CP200-XLS, CP200D, CT150, CT250, CT450, CT450-LS, DTR410, DTR550, DTR650, GTX Privacy Plus, PR400, SP50, SP50+, VL50.