The Dials involve sunray and guilloche finishes, and therefore are generally protected by scratch-resistant sapphire crystals. Attached on the situations are buttery-smooth Barenia leather-based straps, usually in the color of the choosing. The phrase “chronometer” took on a slightly broader indicating as own, portable timekeeping, as represented by pocket watches https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/