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Results for Chronometer (COSC)

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Chronometer (COSC)

The Swiss accuracy certification at -4/+6 s/day across 15 days.

VIDEO: A flashback through a year of Longines stories, and one last hurrah in Beijing to launch an aggressively priced new COSC-certified collection Time+Tide
Longines stories Nov 22, 2017

VIDEO: A flashback through a year of Longines stories, and one last hurrah in Beijing to launch an aggressively priced new COSC-certified collection

Many brands and many people have taken a chance on Time+Tide since we launched, way back in 2014. One of the greater leaps of faith was earlier this year, when Longines gave us permission to spend time in their archives, and extended a standing invitation to several international events. The aim was to create a … ContinuedThe post VIDEO: A flashback through a year of Longines stories, and one last hurrah in Beijing to launch an aggressively priced new COSC-certified collection appeared first on Time+Tide Watches.

ADVENT CALENDAR 2016: December 16 - Omega Speedmaster Moonphase Chronograph Master Chronometer Time+Tide
Omega Speedmaster Moonphase Chronograph Master Dec 15, 2016

ADVENT CALENDAR 2016: December 16 - Omega Speedmaster Moonphase Chronograph Master Chronometer

In terms surprises, at Christmas or at any other time, Omega releasing a new Speedmaster does not rank (sorry Omegamaniacs). In the last few years we’ve seen Speedies offered in every colour and design under the sun. That said, their latest, the in-no-way-economically named Speedmaster Moonphase Chronograph Master Chronometer is, in fact, pretty eye-opening, mouth-watering and wallet-tempting. It’s hot, … ContinuedThe post ADVENT CALENDAR 2016: December 16 – Omega Speedmaster Moonphase Chronograph Master Chronometer appeared first on Time+Tide Watches.

Zenith x Kari Voutilainen x Phillips Calibre 135 Observatoire: 10 of the World’s Highest Precision, Competition-Winning Chronometer Movements Ready for the Wrist - Reprise Quill & Pad
Zenith x Kari Voutilainen x Sep 2, 2023

Zenith x Kari Voutilainen x Phillips Calibre 135 Observatoire: 10 of the World’s Highest Precision, Competition-Winning Chronometer Movements Ready for the Wrist - Reprise

After seven decades carefully stored away in the Zenith archives, ten of the original chronometry competition-winning movements find their way into a limited set of new watches thanks to Phillips, legendary independent watchmaker Kari Voutilainen, and Zenith's current management.

Insight: Daniels’ Co-Axial Escapement, an Evolution of the Fasoldt Chronometer SJX Watches
Omega Feb 21, 2023

Insight: Daniels’ Co-Axial Escapement, an Evolution of the Fasoldt Chronometer

In the quest for precision chronometry in a mechanical watch, perhaps no other component is as crucial as the escapement – often consisting of an escape wheel and lever that engage with the oscillating organ. The history of watchmaking recounts many an attempt at inventing a better-performing escapement, with some attempts naturally more successful than others. By the 20th century, the watch industry had settled upon the Swiss lever escapement, which has proven itself to be a reasonably solid performer and crucially, one fit for mass production. However, in the latter decades of the century, one English watchmaker attempted to challenge the industry status quo. In 1974, George Daniels invented the “co-axial escapement”, a seemingly novel and practical escapement of his own design that was conceived as an functionally superior alternative to the Swiss lever escapement. Daniels’ invention fulfilled his ambition, at least in part, when it was sold to Omega and then successfully industrialised starting in 1999; today it is found in hundreds of thousands of movements that Omega produces each year. The latest iteration of the Omega Speedmaster Moonwatch is kitted out with the co-axial escapement With the merits of the co-axial escapement having been proven in part by its large-scale adoption, my aim here is not to examine its intrinsic qualities, but rather delve into its development. Specifically I will explore the fact that the co-axial escapement might not be an ent...

Introducing: The Aria Manufacture Chronometer From Formex Hodinkee
Formex What We Know Jun 1, 2026

Introducing: The Aria Manufacture Chronometer From Formex

What We Know The last time I covered something from Formex was over a year ago, when the brand released a highly finished, full-ceramic sports watch, complete with a ceramic bracelet and even a ceramic micro-adjust clasp, at an unrivaled price point. Today, the brand continues its upmarket trend with a brand-new watch design called the Aria. The Aria takes the form of a broad, integrated-bracelet design in full grade 5 titanium. The 40mm case feels broader than normal, thanks to an impressively thin case height of 6.9mm, even though the lug-to-lug is still quite reasonable at 45.45mm. While the silhouette gives a smooth look, there's quite a bit of contrasting finishing going on here, with brushing of the titanium case and bracelet links done entirely by hand. Though the styling certainly leans towards its identity as a bold sports watch, there's a lot of subtlety in the design, for example, with the individual bracelet links being slightly curved or the extra dimensionality of the layer of titanium peeking out from each link's milled-out spaces. The clasp includes Formex's proprietary micro-adjust system, which provides extra space on both sides of the bracelet by pulling or pushing each side. There are three dials for the Aria: "Selva Green," "Ardesia Grey," and "Denso Blue." All three have a certain muted look to the hue, matching the slightly darker nature of titanium. Dimensionality is achieved through contrasting indices in rose-gold coloring, set on applied raised p...

Interview: Zenith’s Product Chief Officer on Reviving the Chronometer Cal. 135 SJX Watches
Zenith s Product Chief Officer May 25, 2026

Interview: Zenith’s Product Chief Officer on Reviving the Chronometer Cal. 135

For much of the past quarter-century, Zenith has built its brand on the back of the El Primero — a fast-beating chronograph calibre that debuted in 1969. But last year — for its 160th anniversary — the brand revived the time-only calibre 135 – a legendary competition calibre originally developed in the late 1940s. The reborn movement debuted within a new collection — the GFJ — named after founder Georges Favre-Jacot. To better understand what lies behind the relaunch of the cal. 135, we talked to Romain Marietta, Chief Product Officer at Zenith. David Serra, Technical Director of Movement Development, provided additional production insights. As Mr Marietta explains, the relaunch of the cal. 135 opens a new chapter for Zenith — more exclusive and more artisanal, featuring precious materials, elevated finishing and a classical aesthetic inspired by the designs of the 1950s. In short, closer to the independent watchmakers’ approach and to their audience. And this is only the beginning — the Le Locle-based brand has plans to further develop both the calibre and the collection. The interview was edited for length and clarity. Yannick Nardin (YN): Let’s start at the beginning: what makes cal. 135 so special? Romain Marietta (RM): For context, it was produced from 1949 until 1962. At the time, the pursuit of precision had a real genuine meaning. Watchmakers measured their strength, stature and reputation through the prizes they won. This movement was created f...

Bring a Loupe: An Omega Marine Chronometer, A Zenith 2000, A Marvin Ocean Chief, And A Jaeger-LeCoultre Étrier Hodinkee
Jaeger-LeCoultre Étrier Happy Friday Ballers May 22, 2026

Bring a Loupe: An Omega Marine Chronometer, A Zenith 2000, A Marvin Ocean Chief, And A Jaeger-LeCoultre Étrier

Happy Friday, Ballers. The air's getting warmer, the NBA Conference Finals are already providing extraordinarily compelling viewing (even if your team's already been bounced), and you've only got another month and change to set up your 4th of July plans. Don't sweat it, however. To paraphrase Dieter from Sprockets, now is the time on Hodinkee when we look at what's selling where. Scorekeeping last week's picks: the Movado Cronoplan is still available from The Time Curator, the Patek Beta 21 sold for $26,750, the Hamilton auction closes tomorrow, so you've still got time on it if you're interested, and the Zenith Time Command for 460 GBP. Onto the show. Strays I'm certainly not alone in finding vintage Boucheron watches charming and worth more attention, and if you need further convincing, this Reflet makes an awfully compelling case. If you look closely at this Enicar Mantagraph, you'll notice there's no Swiss marking on the dial, and that, though the watch comes in its original Enicar box, the guarantee card is for a Seiko. This would all seem strange and potentially nefarious were it not for the fact that the Enicar Mantagraph is essentially a rebranded Seiko 7016, a movement well worth your time. Speaking of vintage flyback chronographs, here's a Longines 13ZN monopusher with a dial that seems designed by time and circumstance to test where you fall on the 'one man's tropical is another man's damaged' spectrum, and if that one's not enough, here's a Double-Red Rolex Sea...

Hands On: Victor Kullberg Tourbillon Pocket Chronometer SJX Watches
Patek Philippe worldtime ref 2523 May 5, 2026

Hands On: Victor Kullberg Tourbillon Pocket Chronometer

Phillips’s upcoming sale The Geneva Watch Auction: XXIII is packed with spectacular watches, including some already well known to collectors like the extra complicated La Royale by Louis Audemars, an unsual Patek Philippe worldtime ref. 2523, and the Golay Fils & Stahl astronomical watch. But among the finest is a simple watch that tracks only the time and state of wind, yet is comprised of several hundred parts: Victor Kullberg No 6583. Behind those three hands is a one-minute tourbillon equipped with an Earnshaw detent escapement, a massive free-sprung compensation balance, anti-magnetic helical balance spring and reverse chain and fusee, making it one of the most elaborate three-hand watches imaginable. Even at its high estimate of US$102,000, this pocket chronometer amounts to something of a steal, especially in an auction where multiple steel sports watches carry much greater estimates. The cult of the chronometer Swiss and English horologists disagreed on a great many things, from the ideal shape and material of escape wheels to the definition of a chronometer. To the Swiss, the title of chronometer was bestowed based on merit as a timekeeper. Any watch could be one if it kept good time, especially with a trusted, independent attestation of its accuracy. Watches submitted to observatory trials — or tested according to the ISO 3159:2009 standard today — are chronometers by this reckoning. England was dominated by the cult of the [marine] chronometer, unsurprisin...

Omega’s New Constellation Observatory Collection Debuts, with a First for a Certified Chronometer Worn & Wound
Omega s New Constellation Observatory Mar 27, 2026

Omega’s New Constellation Observatory Collection Debuts, with a First for a Certified Chronometer

Omega pleased a lot of dress watch and vintage fans this week when they launched the new Constellation Observatory collection at their Swiss headquarters. Zach Weiss is on the ground in Bielle even as we speak getting hands-on with the new watches, and he’ll have a full hands on report with his own photography coming soon. For now, a quick rundown of the new collection, and why it’s a fairly major play for the brand.  The Constellation is a historic Omega collection that has changed a lot through the years, always remaining flexible with the current styles and trends of the day. This collection, though, is a direct shot at the hearts and minds of Omega purists, as its effectively a recreation of the original 1950s Constellation in its broad strokes. The cases and dials will be familiar to anyone who has collected or admired original Constellations, with highly angular cases and distinctive dogleg lug design.  That said, these are not one to one recreations of watches from the 1950s. The cases, on paper at least, are rather large for what most would agree is a riff on a classic dress watch. The diameter is 39.4mm, and case height is 12.23mm. The lug to lug span comes in at 47.2mm. So, not small by any means, but we’ll look forward to Zach’s impressions of how they actually wear soon enough.  As is typical with Omega these days, we have a wide variety of case material and dial options available. We get all three gold alloys that Omega likes to deploy (Sedna, Canop...

First Look - COSC x Ceramic x Meteorite… Meet the Formex Essence Ceramica Dark Matter Monochrome
Formex Essence Ceramica Dark Matter Dec 9, 2025

First Look - COSC x Ceramic x Meteorite… Meet the Formex Essence Ceramica Dark Matter

Celebrating its 25th anniversary, Formex continues to excite while exploring materials and mechanical substance with the new Essence Ceramica Dark Matter, a watch that fuses the brand’s most advanced ceramic construction with a dial cut from the depths of space itself. Following the Essence Space Ghost and the full-ceramic Essence Ceramica, this latest creation unites […]

Introducing - Omega Launches The Seamaster Aqua Terra 30mm Collection with New Master Chronometer Movements Monochrome
Omega Launches Jun 19, 2025

Introducing - Omega Launches The Seamaster Aqua Terra 30mm Collection with New Master Chronometer Movements

Omega releases a new sub-collection of its Seamaster Aqua Terra in 30mm cases with metal bracelets spread across 12 references. A classic all-rounder, the 30mm Aqua Terra models are powered by two new in-house automatic movements. Designed to fit the smaller case size, calibre 8750 and 8751 are the smallest and slimmest co-axial Master Chronometers […]