Vacheron Constantin Overseas watch upgraded version V2. It took 10 months to create a high-quality stainless steel case, 41mm in diameter, sapphire crystal back, automatic winding mechanism, swing frequency 28800 times/hour, stainless steel watch buckle, waterproof to 150 meters. The last thing I must appreciate is the new "interchangeable strap system". The new Overseas only needs to move a small lever between the strap and the lug to replace the strap. Steel strips and tapes are optional, truly achieving 1:1 reproduction.