My first Bluetooth device and I'm mostly happy with the purchase. A few things to note:1. It would be great if these things would bend a bit to fit your head and ear position...ya know, like eyeglasses. They are, in essence the same shape, worn backward.2. Since this is a stereo unit, but only stereo for music (phone is just in the right earpiece), a bit more volume would be nice. I wear mine while walking and some of the MP3s I've uploaded to my phone are simply not loud enough, most are though.What I like about this device:1. Very intuitive LED confirms that it is turning ON or OFF and when it's ACTIVE.2. The first time I spoke to it in phone mode, it knew who I wanted to call! If it doesn't understand, it tries to be helpful (and usually succeeds).3. It seem like it will last. Seems pretty well made.