The case uses some special screws and has articulating lugs, which help the sheer mass of the case fit securely on a range of wrist sizes. It is quite rare for a watch design to be so focused on being large, but also wearable. With a properly-sized strap, the Porsche Design P'6780 Diver wears extremely comfortably. Changes to the case from the Eterna to the Porsche Design are evident, but minor. Most of the changes to the watch from the prior Eterna version are on the dial - though it is not just a matter of a re-badged watch - the Porsche Design piece is very much a Porsche Design watch that simply borrows from an incredible design that didn't work for Eterna.