I can not understand how some people (see above) come to such hair-raising test reviews! The Sony headphones have an absolutely crystal-clear sound with pleasing bass. The maximum volume of the headphones is in no way deficient, they can be easily influenced by a higher basic setting of the transmission source. The battery life is approx. 20 hours (25h indicated) just great. And even the promised minimizing surrounding noise is impeccable, I have experienced so far not even better. I have in the meantime already tested several Bluetooth headsets, this is undoubtedly one of the best in this price range.
