The Motorola PMMN4050A Large Remote Speaker Microphone is a high-quality microphone designed specifically for Motorola radios in the RADIUS SERIES. It features a noise-cancelling feature to ensure clear and uninterrupted communication, making it ideal for environments with background noise. With a 3.5mm connectivity option, this speaker microphone is a convenient and reliable accessory for radio communication devices. Designed by Motorola, a trusted brand in consumer electronics, this product guarantees excellent performance and compatibility with Motorola radios.