Whilst the ref. 116610LV retained the basic 40mm case diameter of all Submariner Date designs previous it, The form of the case was revamped. Submariner watches that belong on the 11661x relatives of references have what is known as the “Super Situation” – characterised by a thicker profile, fatter lugs, https://www.watchesworld.com/summer-delights-top-watches-for-men-and-women/