FS is BNIB Nextlink AX2 wireless bluetooth headset.
8 hours of talk time
500-1500 hours of standby
bluetooth V.1.2 compliant
weighs only 10 grams.
I bought this for $90, but again, im entertaining Best offer.
http://www.mobiletechreview.com/tips/bluespoon-AX2-headset.htm