Franck Muller is a luxury watch manufacturer founded in Switzerland in 1991. Franck Muller is known for its unique designs and technological innovations, and its watches feature sophisticated mechanical movements and innovative case designs. In particular, the tonneau-shaped case, known as the Tonneau Curvex, is an iconic design. Franck Muller also actively collaborates with other luxury watch manufacturers, offering limited models and special collections. These elements combine to earn Franck Muller high praise from watch enthusiasts around the world.