For nearly a century, certifying a watch for precision meant one thing: a seconds hand. Without one, there was no reliable way to measure timekeeping accuracy. That assumption has now been overturned. OMEGA today unveiled the Constellation Observatory Collection — the first two-hand watch in history to achieve Master Chronometer certification.

The breakthrough hinges on Dual Metric Technology, a wireless testing system developed by OMEGA’s Laboratoire de Précision and certified by METAS, Switzerland’s Federal Institute of Metrology. Rather than photographing a seconds hand’s position once per day, the device continuously captures the acoustic signature of each tick and tock throughout the full 25-day certification process, recording temperature, position, magnetic field exposure, and atmospheric pressure the entire time.

“Until now, precision certification has required a seconds hand. The development of a new acoustic testing methodology has made that requirement obsolete,” said Raynald Aeschlimann, President & CEO of OMEGA. 

The practical significance goes beyond the absence of a sweep hand. Traditional testing generated one data point per day. The new system generates continuous data from the first second of testing, giving watchmakers the ability to identify not just that a variation exists, but precisely when and where it occurs — whether in a particular temperature range, position, or magnetic environment.

The Constellation Observatory Collection draws directly from OMEGA’s archive. The dodecagonal “pie-pan” dial traces back to early Constellation references of the 1950s, as do the faceted kite-form indexes, dauphine hands, and dog-leg lugs. The guilloché finish on the dial facets appeared on early Grand Luxe models. A nine-row brick-pattern bracelet in 18K Moonshine™ Gold is a modern interpretation of vintage brick bracelets from the collection’s earliest years.

Nine references, all at 39.4 mm, span three tiers — Grand Luxe, Luxe, and Standard — and are powered by two new calibres. The Grand Luxe Calibre 8915 pairs the Platinum-Gold edition, featuring a rotor base in 18K Sedna™ Gold and an Observatory medallion in 18K white gold with aventurine enamel sky and eight applied stars. The Luxe variant marks the first time OMEGA has used an 18K Moonshine™ Gold rotor and balance bridge in any watch. The Standard Calibre 8914 powers the O-MEGASTEEL references in a rhodium-plated finish.

For the first time, all four of OMEGA’s proprietary precious metal alloys — Sedna™ Gold, Moonshine™ Gold, Canopus Gold™, and 950 Platinum — appear together within a single collection. The steel references introduce a black ceramic pie-pan dial, a technically demanding achievement given the precision required to replicate the dodecagonal form in ceramic.