The Dials incorporate sunray and guilloche finishes, and they are often protected by scratch-resistant sapphire crystals. Attached on the conditions are buttery-smooth Barenia leather-based straps, normally in the color of the picking out. Declaring the winner on the race to build the 1st automated chronograph in 1969 is contentious business, https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/