Many of you use Bluetooth headsets with your Windows Mobile PDA Phones and Smartphones, but a new offering from Plantronics adds a new twist: stereo Bluetooth. Now, stereo Bluetooth headsets – or those which use the A2DP profile – are nothing new, but the Plantronics Voyager 855 features a detachable cable which adds an earbud to the unit so that you can enjoy calls and music in stereo, all over a wireless Bluetooth connection. It also has an expandable boom so that the unit’s mic is closer to your mouth when in use. Take a look…