Definitely disappointing. Build quality: well, after all, it doesn't fall apart. The (short) cable is a flat "chicken intestine", I don't think it can withstand long-term use. However, I like the D-shaped earband, it does not press the ear. Sound: the bass dominates (too much for me), the middle and highs are smeared, which after a while is really disturbing (the not much more expensive Pioneer SE-MS5T-K bought together with it, which is also a headphone with a microphone, has a clearer, nicer sound produces). Even if it is not suitable for listening to music, I hope it will hold its own as a headset.