Easy to use, except you cant walk away from you phone. They dont automatically reconnect. You have to put them back in the case and take them back out to reconnect.
They fit snug and the sound quality is great. I prefer my wireless earbuds to have no touch control, so the app allowing me to disable them is wonderful
I've been using them in my gym sessions and to my surprise the earbuds hold themselves very good, they are quite comfortable and the eq modes gives you freedom to tailor your sound to your liking.
The noise cancellation works very good, specially to block the awful music some gyms play in the background.
On the other side, the only drawback I could find is that the case is a little bit bulky and heavy. Not ideal to hold in your shorts if you train running, for example.