Omega Constellation Co-Axial Master Chronometer 29mm Steel-Sedna Gold Green Dial Leather Strap 131.28.29.20.99.001

The Omega Constellation is one of the most storied lines in Swiss watchmaking, tracing its roots to 1952 when Omega introduced it as the definitive expression of precision and elegance. Over seven decades the Constellation has evolved from a pioneering chronometer contender into a symbol of refined femininity and horological mastery, worn by icons and collected by discerning enthusiasts around the world. Reference 131.28.29.20.99.001 represents this legacy at its most contemporary and luxurious, bringing together advanced movement certification, precious materials, and show-stopping dial artistry in a single cohesive package.

At the heart of this reference is the 29mm case constructed from polished stainless steel enriched with Omega's own Sedna Gold—a proprietary 18k rose-gold alloy blended with copper and palladium that retains its warm, rosy hue far longer than conventional gold alloys. This two-material architecture creates a beautifully balanced contrast between cool steel and warm gold that is immediately recognizable as a hallmark of modern Constellation design. The griffes, or claws, that flank the case at 3 and 9 o'clock are among the most iconic design signatures in watchmaking, anchoring the Constellation's visual identity across generations.

The green dial is the undeniable centerpiece of this watch. Set with diamonds that catch and scatter light with every movement of the wrist, it transforms a timepiece into a wearable jewel without sacrificing its function as a precision instrument. Green has emerged as one of the most coveted dial colors in contemporary luxury watchmaking, and Omega's execution here—rich, deep, and complemented by the warmth of Sedna Gold—feels both fashion-forward and timelessly sophisticated. The diamond-set bezel encircles the dial in brilliant stones, adding a further layer of brilliance that elevates this Constellation firmly into the realm of fine jewelry watches.

Powered by Omega's Co-Axial Master Chronometer movement, this Constellation delivers the highest level of performance certification in the Swiss industry. Master Chronometer certification, awarded by METAS—the Swiss Federal Institute of Metrology—subjects the movement to eight rigorous tests including accuracy in multiple positions, resistance to magnetic fields of 15,000 gauss, and water resistance verification. The Co-Axial escapement, developed by master watchmaker George Daniels and adopted by Omega, dramatically reduces friction and wear, meaning the movement requires servicing far less frequently than a conventional lever escapement. Owners of this reference enjoy a watch that is as reliable and accurate as it is beautiful.

On the wrist, the 29mm footprint is elegantly proportioned for a wide range of wearers, sitting close to the skin on its supple leather strap and presenting the green diamond dial at exactly the right angle to command attention. The combination of a relatively compact case, a jewel-bright dial, and a comfortable leather strap makes this Constellation equally suited to a formal evening occasion and an elevated everyday ensemble. It is the kind of watch that draws compliments from those who appreciate fine timepieces and from those who simply appreciate beautiful objects.

Bizak & Co. is proud to offer this brand-new Omega Constellation Co-Axial Master Chronometer reference 131.28.29.20.99.001 for sale online. As a trusted luxury watch dealer, Bizak & Co. provides expert pre-purchase consultation, competitive pricing, and a seamless buying experience for collectors and first-time Omega buyers alike. Whether you are searching to buy this Constellation as a personal indulgence or as an extraordinary gift, our team is ready to assist. Reach out through bizakandco.com to learn more, verify availability, or place your order today.