I have the headphones already very satisfied some time in use and am from the price performance ratio ago. After I was disappointed with my previous which were with my smartphone while, I have found at Amazon white HZZ. I use them only with my smartphone fier playing music, pop and Germanpop. By Inearsystem hear the music very sonorous. Playback is very good and I like to listen to them. Use the L plugs that are quite well draufbekommt for something gefriemel. For optics; Bought with the model with the white cables, the plugs are also available in white and the casing is made of aluminum-chrome, looks at all events from chic and the bag is made of black nylon fabric that makes a robust impression. From the optics, and the sound, I would buy it again, so a shooting star.