THE HD 620S
The HD 620S are made of aluminum, plastic and faux leather and weigh 670g.
As for size the HD 620S are medium ones.
Sennheiser has placed their logo on the outside of the earcups and their name on the right end of the headband.
Typically, left and right markings are placed on the interior as seen above.
The faux leather dressed earpads are large in size with sufficient padding.
Above you can see an exposed view of the right earcup (marketing material).
The headpad is also dressed in faux leather and sufficiently padded but for some strange reason the gap in the middle tilts more towards the left side.
Each side extends up to 55mm (110mm total) via 18 increments.
Both the 3.5mm and 6.3mm plugs are gold plated.