The Dials include sunray and guilloche finishes, and therefore are always protected by scratch-resistant sapphire crystals. Hooked up to the cases are buttery-smooth Barenia leather straps, often in the color of your picking out. This was the result of intensive R&D with the Manufacture, which envisioned a contemporary production system https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/