While the ref. 116610LV retained the classic 40mm circumstance diameter of all Submariner Day designs preceding it, the shape of the case was revamped. Submariner watches that belong on the 11661x family of references have what is recognized as the “Tremendous Case” – characterised by a thicker profile, fatter lugs, https://www.watchesworld.com/summer-delights-top-watches-for-men-and-women/