To actually enjoy the finer specifics of the timepiece, OMEGA takes advantage of artificial sapphire crystal using a remarkably scratch-resistant and anti-reflective treatment method. Prior to the machining and finishing procedures occur, the sapphire crystals are manufactured beneath the Verneuil approach, also called flame fusion. The Rolex Submariner 124060, in https://www.watchesworld.com/top-10-dive-watches/