the PMMN4135B Xtreme Voice Plus (XVP) Remote Speaker Microphone from Motorola Solutions is designed for mission-critical communication. The XVP RSM features four high dynamic range (HDR) microphones for all-round coverage and advanced windporting and adaptive noise suppression for superior clarity. It's intrinsically safe, Div 1 certified, and boasts an enhanced ergonomic design. Experience optimal audio performance with the XVP RSM, outperforming standard single or dual mic RSM designs. The XVP RSM is built to adapt to changing noise environments for maximum noise cancellation. Its speaker has been specially engineered to improve clarity while maintaining best-in-class loudness. The XVP RSM enhances APX, APX N70, and APX NEXT series radios to engage the full features of the adaptive audio engine, providing the loudest, most intelligible audio in any environment. The XVP RSM is your reliable partner for clear and loud audio communication.