Quality is what we usually encounter in good ear headphones, which also means that although one is in the same brand, so do not expect to get the same quality of sound in Hifi headphones like the Sennheiser HD650 open stereo headphones or even the Sennheiser - HD 598 - wired Audiophile Headphones are another price level.
For mobile use as well as Skype use is fine.
The headphones come with a magnetic closure and a storage pouch extension 2m, which makes getting around the PC, for example to show the camera objects while staying connected on Skype.
