Very good for the price, and comfortable, but the range was a little short for me.
For their price, the quality and comfort of these headphones are really good.
Of course, much more expensive headphones will have better sound quality, and possibly better battery life, but they're probably good enough for most people: I've been using them for over 4h30 on their own, with noise reduction in 'Ambient' (not completely deactivated). That said, if I want to keep them in my ears all afternoon (which is possible, as they're comfortable), this battery life is a bit short.
If that's enough for you, then this is a very good product for the price.
Just bear in mind that competitors at 200/300 euros or more will of course have better sound quality, but once again this product, for its price, has more than adequate sound quality.