The pictured Music Adpater for my Samsung SGH-D900i is not reached in this form with me. While on the packaging is the same adapter as seen here, however, there is an adapter with a 5cm long cables and of course the 3.5 mm jack, which is significantly better than the processed "cheaper" models for almost 3, - ( Noname). The integrated spiral loop for attachment to the mobile phone is not available, but there are no mounting option with my SGH-D900i, the spiral loop would have been superfluous.
Now the sound quality: So in combination with my newly acquired "Groove Buds Premium In-Ear Headphones" and the adapter it indicates the sound quality no complaints.
So I think it is a buy recommendation considering that you do not get the adapter which can be seen here!