Instructions for using are poor as never had wireless heaphones before. Had problem syncing with ipad Air2 but otherwise good after trying various ways to use.

This set of headphones were actually better and cost less than the other MDR headphones I bought from Sony in the past. The reasons are as follows; You can hear the voice automation to let you know they are turned on via the power button whereas the more expensive MDR's didn't, they just beeped. Also it notifies you through voice automation when it connects to the Bluetooth and the other MDR's didn't even have a function for it. They also have better depth of bass and sound amplification. They noise cancel better and they have easier button actions to adjust volume and call changes. The best part about it all is that I have a Sony Z3, a Sony Smartwatch 3 and these MDR headphones and they all function in sync with each other. I'm able to alternate volume and app access through my watch if my phone is within 100 yards of Bluetooth coverage for all 3 devices and the headphones have a prolonged battery life, which means despite the fact I have a mobile charger port device with USB on me, which fits in my pocket, I never need to worry about charging all 3 at the same time. All of them will work off a standard USB Android charger and this makes it easier for commutes to work, exercises at the gym or on the go and my downtime at home. I would only comment on these headphones, but Sony have done an excellent job in making it seamless for their users to incorporate devices to immerse their customers into an easy life with their products. Good job Sony.

Bought this for my daughter's birthday and she thinks it is fantastic. The sound is amazing.