The Cartier Tonneau is one of the earliest watch designs of the French maison. Introduced in 1906, it was unveiled just two years after the introduction of the first men’s wristwatch, the Santos-Dumont. Yet again, Louis Cartier challenged the concept of round watches with the Tonneau’s barrel-shaped case. It also paved the way for strong, bold, and geometric Art Deco-style timepieces that soon followed. While the Tonneau has not gained the same amount of popularity as the Santos or the Tank, it is certainly one of the most original and elegant creations of Cartier, and truly a connoisseur’s timepiece. Explore our collection of Cartier Tonneau watches at SwissWatchExpo.com.