Vacheron Constantin Overseas World Traveler Watch Upgrade Version V2 is a masterpiece that took 10 months to create. It features a stainless steel case with a diameter of 41mm, a sapphire crystal front and back, and is powered by a modified 7750 automatic movement with a frequency of 28,800 beats per hour. The watch includes a stainless steel buckle and is water resistant up to 150 meters. Lastly, it is worth noting the brand new interchangeable strap system. With the new Overseas, you can easily change the strap by simply sliding a small lever between the strap and the lugs. Each piece is customizable, achieving a true 1:1 replica.