The Cartier Blue Ball series of watches are known for their exquisite design and elegant style. Of course, this type of watch certainly possesses such characteristics. The stainless steel case gives the watch a lightweight appearance, reminiscent of a balloon. The blue crown seems to defy the usual pattern, like a couple playing around with fun. The Roman numerals on the dial add a vintage charm, while the decorative patterns and sword-shaped hands complete the look. This watch exudes a delicate and thoughtful atmosphere—just what a couple would want, wouldn’t they? Built-in mechanism: Japanese Seiko fully automatic mechanical movement. There are also Swiss quartz models available. The crystal lens is made of sapphire glass, with high water resistance. The blue hands are polished to a high standard, and their shape is perfectly curved.