Vacheron Constantin Overseas Style 4300V/120R-B642 Perpetual Calendar Automatic Mechanical Watch 41.5mm

Vacheron Constantin Overseas series style openworked upgraded wristwatch, reference 4300V/120R-B642.

The watch is equipped with a Cal.1120QP-style automatic mechanical movement with multiple complications, including calendar, day, month, and moon phase functions, all designed to operate normally.

Case diameter: 41.5mm.
Front and back sapphire crystal glass.
Dial: sunburst satin-brushed finish with minute track and strong luminous coating.

The watch features a quick-change strap system, allowing easy strap replacement via a small lever between the lugs, similar to the original design.

Case material: 316L stainless steel.
Screw-down crown.
The case shape combines a round and slightly elliptical design, representing a signature aesthetic of the Overseas series.

Overall design emphasizes craftsmanship, sporty elegance, and mechanical complexity.