While the ref. 116610LV retained the typical 40mm situation diameter of all Submariner Day models preceding it, The form of the case was revamped. Submariner watches that belong for the 11661x loved ones of references have what is called the “Tremendous Case” – characterised by a thicker profile, fatter lugs, https://www.watchesworld.com/summer-delights-top-watches-for-men-and-women/