This is possibly the best bluetooth I have ever owned. It can function as a standalone headset while still playing wireless audio or you can add the attachment for wireless stereo music. It comes with multiple ear attachments to fit different exterior ear shapes and interior ear sizes. Very durable which is what really amazes me. I inadvertantly dropped this thing in the middle of a snow storm at my home and thought, "Oh, crap. I just lost $80." I waited a moth later and I found the head set after the snow melted. I charged it, used it, and it worked just like new! I was amazed at this little things hardiness considering it also takes daily beatings from my 1 and 3 year old.