When the ref. 116610LV retained the traditional 40mm case diameter of all Submariner Date designs previous it, the shape of the case was revamped. Submariner watches that belong to your 11661x family of references have what is known as the “Tremendous Case” – characterized by a thicker profile, fatter lugs, https://www.watchesworld.com/summer-delights-top-watches-for-men-and-women/