Granted, they don’t boast Bluetooth connectivity, but at just $40, the Plantronics MHS213 mobile stereo headset is a pretty good solution for listening to music on the go. As can be expected, you can switch over to voice calls on the fly, temporarily pausing the tunes as you chat it up with your significant other.
The in-ear design “fits into your ears with absolute ease” while reducing outside noise int eh process. The in-line microphone is where you will also find the call/end button, as well as the ability to switch between mono and stereo sound.
More details available at the Plantronics website.