It comes with microphone and answering button. You can use it as a normal hands free. Light and handy, very convenient to carry. Comes with a clip that allows you to put it on clothes. Brand new handsfree/headset to 3.5mm adapter with volume control. With this adapter; you can use normal headphones to listen music with your cell phone. This is an audio converter with answering key; volume control and microphone. You can use it for conversation as normal handsfree. The port on the adapter can be connected with any 3.5mm audio device like iPod earphone, Sony headphone, speaker, hifi, etc.