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