I bought this product there are 6 or 7 months and, surprise, there is no longer a headset that works since last week. Very disappointing for a Sony product and headphones sold to more than 30 euros! Not environmentally friendly either. Level sound quality, do not worry. For cons, the internal microphone is not working very well with my iPhone 3GS, but the problem existed with Apple headphones. Not recommended, therefore, given the low durability.