Vacheron Constantin Overseas Perpetual Calendar Ultra-Thin

Vacheron Constantin Overseas Perpetual Calendar Ultra-Thin

The Vacheron Constantin Overseas Perpetual Calendar Ultra-Thin Ref. 4300V/120R-B509 represents one of the most refined executions of the modern luxury sports watch, combining ultra-thin haute horlogerie with the signature versatility of the Overseas collection. Crafted entirely in 18K 5N pink gold, the watch features a 41.5 mm case with the iconic Maltese cross-inspired bezel and an integrated pink gold bracelet that delivers both visual warmth and substantial wrist presence.

Its rich sunburst blue dial creates strong contrast against the polished pink gold hands and applied hour markers, while the perpetual calendar layout remains exceptionally balanced and elegant. The display includes hand-type day, date, month, leap year indication, and a moon phase complication featuring twin gold moons against a deep blue celestial background. Despite the complexity of the movement, the case maintains an impressively slim 8.1 mm profile, reinforcing the “Ultra-Thin” identity of the reference.

The architecture incorporates sapphire crystal front and exhibition caseback, screw-down crown, and 50-meter water resistance. Alternating satin-brushed and polished finishing throughout the case and bracelet highlight Vacheron Constantin’s exceptional attention to detail, while the integrated quick-change system allows seamless switching between the pink gold bracelet, leather strap, and rubber strap configurations.

Powered by the in-house Calibre 1120 QP/1 automatic movement, the watch delivers perpetual calendar functionality accurate until the year 2100, alongside moon phase, hours, and minutes. The ultra-thin Geneva Seal-certified movement operates at 19,800 vph and provides approximately 40 hours of power reserve while remaining one of the thinnest perpetual calendar calibres ever fitted into a luxury sports watch.

This pink gold blue-dial Overseas Perpetual Calendar Ultra-Thin is widely considered one of the most elegant perpetual calendar sports watches on the market, blending technical sophistication, precious-metal execution, and everyday wearability in a distinctly Vacheron Constantin manner. Community collectors frequently highlight the exceptional blue dial and ultra-thin proportions as defining features of the reference.

Key specifications

Reference: 4300V/120R-B509
Collection: Overseas
Case material: 18K 5N pink gold
Bezel: Maltese cross-inspired pink gold bezel
Diameter: 41.5 mm
Thickness: 8.1 mm
Dial: Sunburst blue with perpetual calendar displays
Calibre: Vacheron Constantin 1120 QP/1, automatic
Jewels: 36
Functions: Hours, minutes, perpetual calendar, moon phase, leap year
Power reserve: Approximately 40 hours
Frequency: 19,800 vph / 2.75 Hz
Certification: Geneva Seal
Crystal: Sapphire crystal front and exhibition caseback
Water resistance: 50 meters (5 ATM)
Bracelet: Integrated 18K pink gold bracelet with interchangeable leather and rubber straps
Clasp: Triple folding clasp in pink gold