XTS1500 Motorola PMMN4045A: The PMMN4045A has Replaced the NMN6191B and NMN6191C. When ordering the PMMN4045A be advised that there is a difference to the old models. The PMMN4045A Does Not come with the emergency man down orange button. (Noise Cancelling) Remote speaker microphone Allows you to talk and listen without removing the radio from the belt case or charger. Ideal for high noise level environments. These water resistant microphones include 6.0' coil cord assembly, The PMMN4045A also comes with 3.5mm earjack for listen only, swivel clip and quick disconnect latch. The PMMN4045A fits the following Radios: XTS1500, XTS2500, XTS3000, XTS3500, XTS5000 HT1000, JT1000, MT2000, MTS2000, MTX8000, MTX838, MTX900, MTX9000, MTX960, MTXLS, ASTRO, AND PR1500