The Vacheron Constantin Overseas Moon Phase Retrograde Date reference 4000V/210A-B911 is a 41mm luxury sports watch crafted from stainless steel. It features a blue lacquered dial with a sunburst satin-finished center and a velvet-finished flange, protected by the collection’s signature six-sided bezel inspired by the Maltese cross. The watch measures 10.48mm in thickness and is powered by the in-house self-winding caliber 2460 R31L/2. This movement consists of 275 components, operates at a frequency of 4Hz, and offers a 40-hour power reserve. It carries the prestigious Hallmark of Geneva, certifying the high standard of its finishing and provenance.
This model is distinguished by its dual complications: a precision moon phase at the 6 o’clock position and a retrograde date display across the upper half of the dial. The astronomical moon phase is engineered with a 135-tooth wheel, requiring only one correction every 122 years to stay in sync with the lunar cycle. The retrograde date hand sweeps across an arc from the 1st to the 31st before jumping back to its starting point at the end of the month. Despite its technical sophistication, the watch maintains a sporty profile with 50 meters of water resistance and an interchangeable strap system that includes a steel bracelet, a blue rubber strap, and a blue calfskin leather strap.
General reviews of the 4000V/210A-B911 praise its successful integration of traditional complications into a modern integrated-bracelet design. Collectors often highlight the watch’s exceptional wearability due to its relatively slim 10.48mm profile compared to other complicated sports watches. The blue sunburst dial is frequently cited as a standout aesthetic feature, providing a vibrant backdrop for the poetic moon phase. Some critics point to the 40-hour power reserve and the 50-meter water resistance as being lower than some of its sportier competitors, though many find these trade-offs acceptable given the elegance and mechanical complexity of the piece.