Aftershokz @ CES 2013
We met AfterShokz last year at CES and they were bringing to market their first product - the AfterShokz Sport. Since then they have lauched the Sportz 2 and Sportz M2. The M2 has a microphone and is still very much a current product for them. They did announce and have some working samples of the upcoming AfterShokz Bluez. This is a Bluetooth version that is based off the Sportz M2 and has a microphone, as well as full media player functionality.
The media player functionality looks a little strained with some of the controls located on the back of the headset and other controls located on each ear(ahem) cheek-piece. Time will tell how this works in the real world. Typically, AfterShokz put a fair bit of thought into usage as these are designed to be worn while running and working out.