The Dials include things like sunray and guilloche finishes, and therefore are usually protected by scratch-resistant sapphire crystals. Connected towards the instances are buttery-easy Barenia leather straps, normally in the colour of one's picking out. 1844: Adolphe Nicole introduces the reset characteristic, permitting distinct periods to be taken in succession. https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/