I'm the proud (!?) owner of a pair of HP's infamous wireless headphones.
Despite all the reported problems, I'm not too unhappy with them (I do treat them very gingerly!). I have, though, managed to lose the itty bitty power adapter.
I'd be eternally grateful if someone out there with a pair could check the part number on the power adapter (if there is one) and see if it's the same as the one being sold at techexcess...