Noisy all around, no headphones make me so cranky. I don’t know when headphones have become the most common semi-permanent equipment for the vast majority of people, in addition to eyelashes and eyebrows. Running, reading, sleeping, daze, bus, subway, train, high-speed rail, no matter when and where, regardless of men and women, young and old, can see different styles, different types of headphones in dedicated work for it. But do you know, you can not leave the headphones are you allow, secretly kill your hearing!