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The Omega Chronostop is one of the most fascinating and misunderstood watches in Omega’s catalog. Launched in 1966 as part of the Seamaster collection, it was conceived as a youthful, accessible entry point into Omega’s world of chronograph watches, a technical timepiece aimed at younger buyers who might not yet be ready for the considerably more expensive Speedmaster or Seamaster chronograph lines. But to dismiss the Chronostop as merely a budget offering would be to fundamentally misunderstand what Omega achieved with this watch. Beneath its playful exterior beats a movement with a direct bloodline to one of the most important chronograph calibers ever made, housed in a case rated to 120 meters of water resistance, wearing a dial designed with genuine sporting purpose. The Chronostop was not a toy. It was a tool, and a seriously good one.
The Caliber 865 that powers the Chronostop is, for all intents and purposes, a simplified version of the Caliber 861, the very movement that was ticking inside the Speedmaster Professional when it accompanied astronauts to the moon. Both movements share their DNA with the legendary Lemania ébauche, and the 865 retains the same manual winding architecture, the same 21,600 vibrations per hour beat rate, and the same 17-jewel construction as its more famous sibling. The key simplification is in the chronograph function itself: where the 861 offers a full chronograph with subsidiary registers for continuous seconds and elapsed minutes, the 865 provides a single central chronostop hand that measures elapsed seconds up to 60, engaged and disengaged by the pusher at 2 o’clock. It is a streamlined, purpose-specific complication, and for timing short events like laps, dives, or, in the case of the Regatta variant, the countdown to a sailing race start, it is remarkably intuitive and effective. The copper-plated finish of the movement is beautifully executed, with the same warm rose-gold toned bridges and careful detailing that make the Speedmaster’s 861 such a pleasure to behold.
The Regatta variant of the Seamaster Chronostop, denoted by the Reference 145.008 with its distinctive dual-crown configuration, is arguably the most visually dramatic version of the Chronostop family. The crown at 10 o’clock rotates the internal bezel ring beneath the crystal, and it is this bezel that gives the Regatta its identity. The countdown scale is marked with vivid blue segments from 10 to 5 minutes and bold red segments from 5 to 0, providing a high-visibility visual reference for the critical final minutes before a sailing race start. The design is surprisingly practical; the large diameter of the bezel ring means individual minutes are far easier to read at a glance than on the tiny subdials of many competing regatta timers, and the ability to start the countdown at any point on the scale gives the sailor genuine flexibility during the frantic pre-start maneuvering. The remainder of the bezel ring carries a standard 60-minute elapsed time scale in grey with white Arabic numerals, making the watch equally useful for general timing purposes outside of the racing context.
This particular example presents with a strong, well-preserved stainless steel case measuring 41mm, with sharp angular lugs that give the Chronostop its distinctive, muscular profile. The brushed surfaces on the case flanks retain good definition, and while there is honest wear consistent with age and use, the overall proportions remain satisfying and uncompromised. The crown at 3 o’clock is original and Omega-signed, and the pusher at 2 o’clock is present and correct. The screw-down caseback features the iconic Seamaster seahorse surrounded by the “Seamaster Waterproof Tested 120m” engraving, and the interior is correctly stamped with Ref. 145.008.
The matte black dial is in good original condition, with the “Omega,” “Chronostop,” and cursive “Seamaster” text all legible. The applied baton indices retain their tritium lume plots, which have aged to a warm, creamy tone that harmonizes beautifully with the aged lume in the original hands. There is some fine speckling and light patina visible on the dial surface, the natural consequence of decades of life, and it adds depth and character to what would otherwise be a straightforward matte finish. The bright orange chronostop seconds hand remains vivid and punchy, providing a fantastic color accent against the black dial and the blue-red bezel segments. The “T Swiss Made T” designation at 6 o’clock confirms the tritium luminous material.
To us, the Seamaster Chronostop Regatta occupies a wildly appealing niche in the vintage Omega universe. It offers genuine Speedmaster movement DNA, a Seamaster-grade waterproof case, a dial that bursts with color and personality, and a sporting purpose that gives the watch real narrative weight, all at a price point that remains dramatically more accessible than its more famous Omega siblings. For the collector who wants something different, something with a story that goes beyond the well-trodden paths of Speedmasters and Seamaster 300s, or for anyone who simply loves a watch that looks unlike anything else on the wrist, the Chronostop Regatta is a stunning choice. Presented on a tropic-style rubber strap.
