The Dials include things like sunray and guilloche finishes, and therefore are usually safeguarded by scratch-resistant sapphire crystals. Hooked up to the scenarios are buttery-clean Barenia leather straps, normally in the color of one's choosing. 1844: Adolphe Nicole introduces the reset characteristic, letting different times to become taken in succession. https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/