To really appreciate the finer specifics of the timepiece, OMEGA uses artificial sapphire crystal that has a very scratch-resistant and anti-reflective procedure. Before the machining and ending processes happen, the sapphire crystals are made under the Verneuil method, also referred to as flame fusion. The Rolex Submariner 124060, in impact, https://www.watchesworld.com/top-10-dive-watches/