Within the watches them selves, Swiss watches often use rhodium-plated brass for their movements, even though German watches favor German silver, which is an alloy of copper and nickel. RLX titanium is often a quality 5 titanium alloy specially chosen by Rolex. Like all titanium alloys, it is very light-weight https://www.watchesworld.com/germanys-top-10-favourite-luxury-watches/