Can't comment on Apple specific technology, but the RemoteTalk seems like just another brand name. It looks like just microphone built into the cable - which is

Can't comment on Apple specific technology, but the RemoteTalk seems like just another brand name. It looks like just microphone built into the cable - which is nothing new - you can get unbranded versions which will work with any headphones that have a detachable cable. Problem is maybe finding a suitable cable and headphones with detachable cable. A number of those higher quality headphones use 3.5mm male to XLR male cables, and I doubt you'll find one with a microphone. (they all seem to be 3.5mm male to male). Could just buy a wireless BT mic instead, and get a decent set of headphones.