It's the second for me, but at any rate it is very clearly not the bluetooth headset.
EDIT: Looking at it again the fourth is not the right model too. That makes two pictures of a different sony headset.
cadavraNo, the wire is detachable, the headphones are still Bluetooth, but a cable is provided for when you don't have any charge, that's why the final picture is of just the wire.
EDIT: Looking at it again the fourth is not the right model too. That makes two pictures of a different sony headset.