On solid appearance, it holds well on the head; isolation with the outside world is good.
His side, he pushes a little too low on that are really too strong. A setting in equalize iphone reduces this: So beware of applications that do not allow, ca risk of "boom boom" in your ears.
By cons, where, in my opinion, is the problem is the bluetooth connection.
Equipped with a iphone5s, the connection jumps ALL THE TIME!
Can not hear music without jerks, telephone in high jacket pocket!
It takes my phone is facing, at the same height in an environment not too disruptive than sound waves to yours!
So, hop, I turn the car totally unusable in public transport ...
Too bad, the product was a whole, good.