http://www.sonystyle.com/webapp/wcs/...5&tab=Features
Sony DR-BT30Q/S
The battery is incredible. The calls seem to work fine. However, in noisy environments the other side says that it is too loud, but I think that is with all mics really. I just love how the battery works for 11 hours. I never buy earbuds anyhow, that's just personal preference. My wired headsets are pretty much the same style.