Normally, I despise coiled cables. But, this one happens to work quite well. It is not a cable that is a burden, it is relatively lightweight, and when retracted, the coiled portion is only about 18" and then you have a 20" and 6" straight wires from the cup to the coiled part and the coiled part to the plug. The standard plug is a 3.5mm plug. However, there is a 1/4" screw-on gold plug that really works well, and since it is a screw-on variation, it is more secure and you are less likely to lose it.
The hinges have a single post point where they attach and swivel at the cup level. The connector post is about 1/4" in diameter and seems solid - possibly made from the carbon plastic that the rest of the headphone structure is. Granted, the headphones will not take a lot of abuse from throwing around like a studio monitor might - but, they are not super fragile, either. Certainly under regular use, they will hold up quite well.
I've got to admit, at the $200.00 price point, the K167 is a real winner. I will post my impressions on the sound a bit later tonight, yet it is very good. I do have some suggestions about the sound where I can make some very low cost (almost free) recommendations on some "work-arounds" that a person could use to tailor the sound for them. Granted, there is no single one heapdphone that will appeal to all. But, I do think there is some nice flexibility with these cans that makes them a pleasure to own.
More to follow a bit later ....