Meet Vacheron Constantin Harmony (ref. 4000S/000R-B123), a distinctive model that balances proportion, precision, and presence. On the wrist, the case feels purposeful: crafted in pink gold and measuring 40 mm in diameter, defined by a cushion silhouette. The caseback is open, and the crystal is sapphire, delivering water resistance to 3000 meters. Visually, the face is where character emerges: a silver tone with matte finish, framed by arabic numerals hour markers, and poire hands. Mechanically, the watch prioritizes accuracy: the 2460 QCL caliber. Initial production year: 2016. The silhouette offers presence without excess, lending confidence in a range of situations. Finishing showcases disciplined attention to detail across facets, edges, and surfaces. For buyers researching specifications and real-world impressions, this reference stands out for coherent design, dependable mechanics, and lasting relevance within modern horology.