3 Answers

Combine like terms: ab + ab = 2ab 2ab

More than anything, the Clous de Paris on the movement represents a departure from tradition that took a while for me to appreciate. I’m generally not a fan, even on Patek’s ref. 6119G, but it's certainly grown on me in the link two weeks since I first saw it. The guilloche pattern is radial from the center post of the micro-rotor, smaller link and tighter close to the post, and bolder at the edge of the bridge link just below the crown.

Ever-Brilliant Steel is used for the link bezel and blacked-out titanium for the rest of the case link just like the original. Titanium is superior to steel in many ways so Seiko has only upgraded the bits link that were originally standard stainless steel to its Ever-Brilliant Steel.