Here are the options I found so far
(the usb adapters support a2dp, a requirement for a headset with mic on BT)
BLUETOOTH ADAPTERS
·BT007Si ? Class 1 (300Ft)
·Anycom USB 130
·SONORIX OBH-0110
BLUETOOTH HEADPHONES W/ MICROPHONES
·Blutake BT420ex (with 3mm audio adapter)
·Anycom BSH 100
·SONORIX OBH-0110 (with 3mm audio adapter)
·LTB BTHS (with 3mm audio adapter)
Anyone got any opinions?