This is an earphone-microphone made by HORI. It is a product for gaming. Because it uses a wired connection, there is little delay in both audio input and output. The product structure and connection diagram are as follows: [Earphone & Microphone] - [Remote Control & Microphone] - [USB Connector] → Connect to game console, etc. Earphone & Microphone: This is a type that hooks over one ear. The hook can be detached, and depending on the direction it is attached, it can be worn on either the left or right ear. The tip is a microphone, and the microphone part can be extended or retracted, allowing you to adjust it according to the distance from your ear to your mouth. Remote Control & Microphone: The remote control has a clip, so you can fix the position of the remote control by attaching it to your clothes. Volume adjustment buttons (+, -) Mute button Microphone There are three buttons and an audio input port. USB Connector: USB 2.0