1、Premium Material: Made of high strength materials, speaker mic microphone can provide excellent durability and reliability of the user experience, you can press the cable at any time to make it shorter or longer. 2、Ptt Button: The remote speaker mic microphone has a Ptt button, when you want to transfer, hold down the Ptt button and speak, easy and convenient to use. 3、Waterproof Design: With multiple groove on the surface, even a little water on the surface won't hurt your speaker microphone, can be used in various environment. 4、Earphone Hole Design: There is a 3.5mm hole on the right side of the microphone, so you can use headphones to connect with this Shoulder speaker mic microphone, can keep your conversation private. 5、Easy to Use: The radio shoulder speaker microphone has a clip on the microphone, you can use clamps to secure the receiver to the shirt. This means you can free your hand from holding the receiver all the time.