Launched in 2026, the Omega Constellation Observatory 140.53.39.21.99.004 is a remarkable addition to the Constellation series, showcasing a blend of classic inspiration and modern advancements in horology. It boasts a round 39.4 mm case crafted from 18K Canopus Gold, characterized by its distinctive faceted 'dog-leg' lugs and a bezel featuring sharply defined angles. Protected by a domed, bevelled sapphire crystal, which includes anti-reflective treatment on both sides, the construction ensures water resistance up to 3 bar. A sapphire crystal caseback allows a glimpse into the intricate movement within.

The dial, also in 18K Canopus Gold, is designed with a central crystal finish and outer sections that exhibit an opaline texture, echoing the 'pie-pan' style seen in the original Constellation from 1952. Eight meticulously hand-guilloché grooves segment the outer ring, while the dial displays the applied Omega logo alongside the Constellation star. Time is indicated by diamond-polished kite-shaped hour markers and matching hands, crafted from 18K Canopus Gold. At the heart of the watch lies the Omega calibre 8915, a self-winding mechanical movement featuring a Co-Axial escapement, beating at 3.5 Hz with a power reserve of around 60 hours. Certified as a Master Chronometer by METAS, it showcases exceptional magnetic resistance up to 15,000 gauss, operating the central hours, minutes, and a time-zone function. Completed with a dark blue leather strap and a polished buckle, the watch reveals its movement through the skeletonized rotor, made of 18K Sedna Gold, which holds the emblematical Constellation Observatory medallion.