Pleasant are me immediately the materials used, and the oval-shaped cable between 3.5 noticed "jack and the" remote control ". This is to prevent tangles and noise. The angled plug is firmly seated in the socket of my Samsung smartphones. Also, when rotating the plug there are no interruptions. The Slide-to-fit system means that you have to screw in the earphones downright in the ear. This worked quite well in my "adult" ears. When my kids (13 and 16 years) worked there, despite several attempts, unfortunately, not really. In general, the sound when listening to music seems rather flat and tinny. during extended press the bracket above the earpiece, which should ensure the correct fit. If you manually continues to press the earpiece in the ear canal, can you get more bass. Of course, this makes no sense in the long run, because the pressure on the ear canal is too strong anyway. Here one or two more gel pads would certainly be very helpful in different shape / size. To make calls, the earphones are very good. So that the other interlocutor understands everything well, you should use the attached to the remote small clip to position the microphone correctly. Because of the sound when listening to music, the lack of gel pads, and pressure in the ear, I draw from two stars. In addition, I find the price / Performance ratio is not justified.