I was a bit sceptical about these, as the high price would put many off. I have a couple of bluetooth speakers for my phone, but at times you just want to listen to the music without disturbing anyone else. Very easy to pair when you first switch them on, extremely lightweight (I was expecting heavier), very comfortable (I wear specs and usually these type dig in the the arm hurting my ears after time) and surprising sound quality.
I listened to different styles of music, classical, opera, rock, reggae, pop, ballads, podcasts, talking books etc to test the range of clarity. The clarity is very impressive, especially on vocal performances like opera and pop, with clear notes on classical and podcasts. Reggae was good but lacked a deep bass that you need for a good beat, so a slight downside with the bass.
They fold away into a small footprint and fit nicely into a bag (supplied). Charging is done by the USB lead, and if you have no bluetooth audio device, you can use the lead that is supplied so they are like normal headphones. This is brilliant if you have an iPod nano, but you can notice a small low rumbling from the lead connection, which is not present over bluetooth.
Where these headphones come in is with bluetooth, no wires and higher clarity. There is also a button for noise cancelling. Although it won't eliminate all background noise, it does suppress it considerably, great for public transport listening or in loud environments.
If connected to your phone for playing music through, as they have a microphone, they also act as a bluetooth hands free headset to allow calls. I tried this and sound quality was very good with clear voices, even though you do get odd looks from people around who thing you are talking to yourself.
Nice headphones but pricey.