Luxury watches are made with high-quality materials such as solid gold, platinum, and rare metals like titanium. The hands and indices on the dial are also often made from precious metals to prevent tarnishing. 

Luxury watches are made by skilled artisans who hand-assemble each component with exceptional attention to detail. 

Luxury watches often have complicated movements and functions, such as perpetual calendars, tourbillons, moon phases, sonneries, and multiple time zones. 

The price of a luxury watch is determined by many factors, including the materials used, the craftsmanship, and the complications. 

The most expensive wristwatch ever sold was a Patek Philippe steel perpetual calendar chronograph made in 1943. The Patek Philippe “Supercomplication” is the most expensive pocket watch ever made. The Chopard 201-Carat watch is one of the most expensive jewelry watches in the world, containing 874 diamonds. 

Rolex watches are known for being waterproof up to 100 meters below the surface. The most expensive Rolex ever sold was Paul Newman's 1968 Reference 6239 Daytona, which sold for $17.75 million in 2017.