Obvious with the caseback, the oscillating mass from the movement is delicately engraved. It can be produced from 18-karat gold and decorated by hand by using a barley grain sample, done by guilloche Crafted by Swiss watchmaker Tissot, the T-Classic Gentleman has the many core characteristics of an excellent gown https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/