Rarely does an accessory hit the market that really seems to fill a gap in the already overcrowded Bluetooth headset space, yet Plantronics may have managed to pull off just such a feat with its uber-low-profile, transforming Voyager 855 headset-cum-headphones. Besides the sliding boom, this model might look like a regular over the ear unit at first glance, but a detachable cord with an earbud at the end allows the 855 to perform double-duty as A2DP-compliant headphones -- great for those of us trying to downsize from the normally-bulky earpieces offered by iLuv, Bluetake, and friends. You're also getting the all-critical AVRCP profile here as well, so the only real downside seems to be the price: sounds like it'll be retailing for around $200 when it hits later this month, although we've already seen street prices ranging from $80 to $150.

Update: Plantronics let us know that pricing will be more in the $110 to $120 range, so bully for you if you can find that $80 deal.