AKG has done very well with these y50bt on ear bluetooth headphones. The headband is a little wider than the non bluetooth y50 and the y50bt fit very well - comfy and light, without clamping on the head tightly. The pads are pillowy and the apt-x bluetooth headphones sound great in wired and wireless mode.
Whathifigave them a 5 Star rating, as their bluetooth 2015 award winner. In the akg y50bt review they said:
We’ll get straight to the point: the AKG Y50BTs are superb. What you have here is a rare example of headphones that are equally excellent across audio performance, features, design and build quality.