Even though the ref. 116610LV retained the traditional 40mm case diameter of all Submariner Day styles preceding it, The form of the case was revamped. Submariner watches that belong to the 11661x household of references have what is named the “Tremendous Circumstance” – characterized by a thicker profile, fatter lugs, https://www.watchesworld.com/summer-delights-top-watches-for-men-and-women/