Vacheron Constantin Overseas watch has a diameter of 41mm, a sapphire crystal case back, a

Vacheron Constantin Overseas watch has a diameter of 41mm, a sapphire crystal case back, a stainless steel buckle, and is waterproof to 150 meters. The last thing that must be appreciated 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.