IMPRES Audio Technology – Automatically optimizes voice clarity and adjusts volume in noisy environments. IP 55 Rated Compatible with SRX2200, APX 1000, APX 3000, APX 4000, APX 6000 / 6000XE / 6000XE, APX 7000 / 7000XE, APX 8000 / 8000XE / 8000HXE Motorola Solutions OEM PMMN4069AL Remote Speaker Microphone. Built for mission-critical performance, this large-housing microphone features IMPRES audio technology that automatically optimizes sound levels, ensuring your transmissions remain clear even in loud, demanding environments. Engineered with Windporting to minimize background noise from wind, rain, and severe weather, the PMMN4069AL allows your voice to cut through ambient noise when every word counts. Its IP55-rated rugged housing provides resistance to dust and water, making it ideal for field operations, public safety, and industrial users. The 3.5mm audio jack on the side allows for optional receive-only earpieces, while the Push-to-Talk (PTT) switch, swivel clip, and quick-disconnect latch make operation simple and secure — even while wearing gloves. Designed with the same speaker element used in Motorola APX portable radios