In the summertime of August 2025, Vacheron Constantin quietly expanded its Overseas Perpetual Calendar Ultra-Thin lineup with a striking new configuration in solid 18k pink gold. This latest model stands out with a tone-on-tone aesthetic, combining a matching 5N pink gold case, bracelet, and dial. Accentuated by subtle blue elements on the month display and minute track, it offers the most chromatically unified expression of the perpetual calendar within the Overseas range to date. Ideal for those who appreciate classical warmth in a sport-luxury format.The case of this reference is crafted entirely in 18K 5N pink gold and measures 41.5 mm in diameter with a slender thickness of just 8.1 mm. Its profile retains the classic Overseas proportions, with a brushed surface finish that contrasts beautifully with polished accents on the bezel and crown guards. 
The case integrates fluidly into the bracelet and carries the familiar notched bezel inspired by Vacheron’s Maltese Cross emblem.
A sapphire crystal caseback frames the ultra-thin Caliber 1120 QP/1, showcasing its refined architecture in full view. The oscillating weight, crafted from solid 22K gold, features a compass rose motif, as a nod to the Overseas collection’s spirit of travel. Surrounding the movement is a slim pink gold ring, while the hand-finished bridges display Geneva stripes and polished anglage, highlighting the brand’s commitment to haute horlogerie.
A screw-down crown in matching pink gold allows for time and moonphase adjustments, while discreet recessed pushers along the case flank control the calendar indications. A flat sapphire crystal spans the top, offering durability and a clear view of the dial. Water-resistance can reach up to 50 meters (165 feet).
The dial is finished in a tone-on-tone 5N pink gold lacquer with a fine sunburst effect radiating from the center. The effect gives the display a rich visual texture that plays subtly with ambient light, reinforcing the cohesion between dial and case.The applied hour markers and matching dauphine hands are crafted in pink gold and filled with Super-LumiNova for night-time visibility.
Perpetual calendar indications are laid out in the familiar symmetrical arrangement: day at 9 o’clock, date at 3, and month with leap year at 12. The moonphase subdial at 6 o’clock uses a matching 5N gold background with delicately engraved stars and twin moons for added harmony.
Blue accents on the outer minute track and in the month display introduce a gentle pop of contrast, preventing the layout from becoming overly uniform. These details offer a welcome balance and reinforce legibility without compromising the dial’s warm monochromatic identity.
Vacheron Constantin Overseas Perpetual Calendar Ultra-Thin
The “Vacheron Constantin Overseas Perpetual Calendar Ultra-Thin” (Ref#: 4300V/220R‑H144) is powered by the in-house self-winding mechanical movement, caliber 1120 QP/1 with 36 jewels, 276 parts, and 19,800 vph. It comes equipped with a free-sprung and adjustable balance wheel. Power reserve on this watch can last up to 40 hours, when fully wound.
Mounted on the watch is the integrated 18K 5N pink gold bracelet featuring half‑Maltese, polished center links and Vacheron’s robust folding clasp with fine adjustment. 
For a sportier or more casual look, the watch also comes with blue and white rubber straps that are easily interchangeable using the Overseas quick‑release system.
For more up to date information visit the official Vacheron Constantin website here.
MSRP: $120,000.00 USD
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