The Commountain CM01-M2P 2-Pin Speaker Mic is a durable shoulder microphone designed for radio communication devices. With a waterproof rating of IP54, this microphone is suitable for use in various environments where clear communication is essential. The 2-pin connector ensures reliable connectivity, while the unit quantity of 3 allows for multiple devices to be used simultaneously. The Commountain brand is known for producing high-quality communication accessories, making this microphone a dependable choice for users in need of a reliable and versatile microphone.