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Results for COSC

202 articles · 3 videos found · page 3 of 7

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Wiki · Guide
Chronometer (COSC)

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

Dimensions · Guide
Case dimensions: Bulgari Octo Finissimo Ultra COSC Bulgari

40 mm × 1.85 mm, lug integrated, Cal. BVL 180

First Look - The New Formex Essence Space Ghost 41mm Automatic COSC Monochrome
Formex Essence Space Ghost 41mm Aug 14, 2025

First Look - The New Formex Essence Space Ghost 41mm Automatic COSC

Formex’s Essence line, introduced in 2018, quickly earned respect as the brand’s versatile, go-anywhere sports watch, combining sharp case architecture, great engineering, and chronometer-certified accuracy. In 2020, the collection took on a cosmic turn with the debut of the Space Rock editions, featuring dials cut from the ancient Muonionalusta meteorite. Over time, these rare cosmic […]

Introducing - The new Formex Reef 39.5mm Bahama Blue Automatic COSC Monochrome
Formex Reef 39.5mm Bahama Blue Jun 11, 2024

Introducing - The new Formex Reef 39.5mm Bahama Blue Automatic COSC

The “Baby Reef” series of Formex 39.5mm dive watches, comprised of four watches distinguished by dial colour, was presented at the end of 2023. Now, in time for summer, it gets a new and very fresh-looking reference. It’s everything the brand enthusiasts appreciate about the collection, only brighter. Here’s the Reef 39.5mm Bahama Blue 300m […]

A Technical Perspective - All About Omega’s Laboratoire de Précision, a new Chronometer Certification to compete with COSC, Open to all Brands Monochrome
Omega s Laboratoire de Précision May 17, 2024

A Technical Perspective - All About Omega’s Laboratoire de Précision, a new Chronometer Certification to compete with COSC, Open to all Brands

Omega is one of the largest luxury watchmakers on the market, carrying multiple emblematic models (Seamaster and Speedmaster, to name a few). However, one vital element of the brand’s success lies in its almost unique take on precision. Omega has long been a pioneer in this field, often ranking first in chronometry contests and introducing […]

Introducing - By Popular Demand, The Smaller Formex “Baby Reef” 39.5mm Automatic COSC 300M Monochrome
Formex Baby Reef” 39.5mm Automatic Dec 7, 2023

Introducing - By Popular Demand, The Smaller Formex “Baby Reef” 39.5mm Automatic COSC 300M

When released in 2020, the 42mm Formex Reef Automatic Chronometer 300M impressed enthusiasts, demonstrating a fusion of innovation and design sophistication in a highly functional tool watch. Fresh and unique, the watch offered a compelling array of features and extensive customization options. Today, just like it did with the Essence collection a few years ago, […]

Exclusive: TAG Heuer To Introduce A COSC Certified Flying Tourbillon Chronograph For Under 20,000CHF (14,900CHF !!!) Revolution
TAG Heuer Mar 22, 2015

Exclusive: TAG Heuer To Introduce A COSC Certified Flying Tourbillon Chronograph For Under 20,000CHF (14,900CHF !!!)

Today, recently appointed General Manager of TAG Heuer, Guy Semon dropped a bombshell on the Revolution team with news of an upcoming watch that certainly is a provocative statement of intent. We at Revolution love our watches, and the passing parade of the best that the Swiss watch industry has to offer is by no means something […]

In Partnership - From The Source : NORQAIN's Ben Küffer Talks Us Through the Expanded Wild ONE Collection Hodinkee
Norqain s Ben Küffer Talks Oct 8, 2026

In Partnership - From The Source : NORQAIN's Ben Küffer Talks Us Through the Expanded Wild ONE Collection

Challenging conventions is part of NORQAIN's DNA. For CEO Ben Küffer, that aim to "redefine what a Swiss mechanical sports watch could be" has been instrumental to the brand's success. For its latest release, the family-owned Swiss brand announced three new models in a first for the brand: grade 5 titanium. The Wild ONE Skeleton Titanium 39mm and 42mm reimagine the brand's signature sports watch, incorporating grade 5 titanium into the watch's top plate with the bottom retaining NORQAIN's signature NORTEQ carbon-fiber-composite.The result is a rich visual contrast and lightweight construction. "Titanium certainly has a future within NORQAIN," Küffer says, "but only where it adds something meaningful to the design and performance of the watch." Each possesses a distinct identity, with the 39mm—limited to 400 pieces—opting for a grey palette based on titanium's muted character, featuring light yellow dial accents and Super-LumiNova for technical performance and legibility. The 42mm, by contrast, opts for a slightly bolder coloring with mint green details for a bolder visual presence. Both are powered by the skeletonized in-house NK26/1 automatic movement, a COSC-certified chronometer with a 65-hour power reserve. The star of the new collection, however, is the all-new Wild ONE Meteorite Titanium 42mm. The Meteorite takes the brand's flagship watch and incorporates Grade 5 titanium and an anthracite iron meteorite dial, combining contemporary high-tech design with ancie...

First Look - The New Steel Brellum Pandial Power Reserve Chronometer LE Black Monochrome
Oct 2, 2026

First Look - The New Steel Brellum Pandial Power Reserve Chronometer LE Black

Independent and deliberately small-scale, Brellum is known (and respected) for following a straightforward formula: strict quality controls, every movement is COSC-certified, and annual watch production is capped at 299 pieces. The brand’s Pandial chronograph series features a tachymeter bezel and telemeter scale, date indication and might be considered the brand’s sportier line. After the 2025 […]

Introducing: The Longines Spirit Pilot And Spirit Pilot Flyback In Blue (Live Pics) Hodinkee
Longines Spirit Pilot Sep 24, 2026

Introducing: The Longines Spirit Pilot And Spirit Pilot Flyback In Blue (Live Pics)

What We Know Not all of the releases we cover are horological heavy hitters or groundbreaking mechanical inventions. Yes, plenty are, but sometimes a simple new dial color is worth talking about. And in the context of Longines' mighty newsworthy year, with several extremely well-received launches like the Hydroconquest and the Master Collection Monopushers already in the recent catalog, a new colorway for the Spirit Pilot and Pilot Flyback still feels worth discussing. The new time-only Spirit Pilot in blue.Image, courtesy Longines. The second iteration of these two watches, since its update last year, introduces a matte blue dial (and a glossy blue ceramic bezel insert on the chronograph). At a high level, that's kind of it. But with the change from a gilt-style look, swapping the golden accents of the applied numerals, chapter ring chamfer, and printing, this is the first time the latest generation of Spirit Pilot feels like a decidedly modern product. Yes, you lose a little bit of the vintage charm, but the new versions are not replacing those "gilt" editions, so now you have the same models in two very different aesthetic contexts. I won't spend too much time on specs because they remain unchanged—the time-only Spirit Pilot is 39mm by 11.5mm, with a lug-to-lug of 47.2mm, and the Flyback chronograph is 39.5mm by 13.4mm with a lug-to-lug of 47.4mm. The time-only model features the automatic L888.4 caliber, which is COSC-certified and offers a 72-hour power reserve with...

Hands On: Chopard L.U.C 1963 Heritage Regulator SJX Watches
Patek Philippe Sep 11, 2026

Hands On: Chopard L.U.C 1963 Heritage Regulator

One of the most appealing releases of Geneva Watch Days was the Chopard L.U.C 1963 Heritage Regulator. While not an altogether new model, the watch incorporates a number of welcome updates, including a smaller case and a more refined dial that resembles an instrument panel on the wrist. The L.U.C 98.02-L movement remains in service, and is both COSC and Poinçon de Genève-certified. Moreover, the calibre achieves an impressive nine days of power reserve and is neatly finished, as is typical for Chopard’s higher-end offerings. Initial thoughts Chopard has long been a steward of the regulator format. In fact, the 1963 Heritage Regulator marks 20 years since the brand’s first contemporary regulator wristwatch. The regulator format is strongly associated with precision clocks, but Chopard’s interpretation reminds me of an automotive dashboard — perhaps intentionally, since the brand’s co-president Karl-Friedrich Scheufele is known for his affinity for vintage cars. The latest example is substantially improved over prior generations, with several nips and tucks that result in a move wearable and less busy package overall. The watch is tangibly well made, with an expensive bill of materials and refined execution. The 1963 Heritage Regulator is priced at about US$50,000, and is limited to a concise run of 25 pieces in (ethically sourced) 18k white gold. By current standards, it’s a reasonable proposition, but still slightly above the going rate for a Patek Philippe...

Introducing: The Breitling Navitimer B09 Chronograph 41 Miles Davis Hodinkee
Breitling Navitimer B09 Chronograph 41 Sep 2, 2026

Introducing: The Breitling Navitimer B09 Chronograph 41 Miles Davis

What We Know In honor of the centennial of legendary musician Miles Davis' birth, Breitling has just announced a limited edition collection at Geneva Watch Days. I say collection because it's more than just one watch, if you want it to be. At the core, Breitling has launched a 500-piece limited-edition model, the steel Navitimer B09 Chronograph 41 Miles Davis, which is inspired by the ref. 806 Mk 5 Navitimer that was worn by the famous jazz musician. If a single steel option isn't enough for you Davis heads out there, Breitling is also producing 50 three-piece sets that offer a trio of executions of the watch, spanning steel, yellow gold, and even platinum with a blue dial.  We can start with the core model, reference AB09501A1B1X1 or AB09501A1B1A1, depending on whether you want a leather strap or the bracelet (you want the bracelet). Measuring 41mm wide (the same as the reference worn by Davis), 13mm thick, and 47.1 mm lug-to-lug, the Navitimer Miles Davis uses a Breitling B09 hand-wound movement that is COSC-certified, ticks at 4 Hz, and employs both a column wheel and a vertical clutch. Water resistance is 30 meters, and this special edition sports both cream-colored lume and Breitling's (very cool) Twin Jet logo.  And then there is the bracelet, a modern interpretation of the Air Racer bracelet that uses a cuff design with large holes. For this execution, Breitling has added hinged links near the clasp to help with comfort. But that's not all; aside from a gorgeous...

Tudor’s 100th Anniversary Celebration Continues with the Return of the North Flag Worn & Wound
Tudor s 100th Anniversary Celebration Sep 1, 2026

Tudor’s 100th Anniversary Celebration Continues with the Return of the North Flag

We knew some big moments would come as Tudor notches its impressive 100th anniversary as a brand this year, and this is one of them: the revival of the North Flag. The aptly named collection has come to serve as the north star for Tudor’s modern offerings and set the tone for the brand in the past decade. When the model first debuted in 2015, it marked the first Tudor watch to house an in-house movement coupled with an exhibition caseback to show it off. The COSC-certified Caliber MT5621 that powered the original was just the jumping off point for Tudor to upgrade models across its catalog with manufacture movements and chronometer certification. Now, in the newly revived North Flag line, we get even greater attention on technical capabilities with METAS certification, giving it Master Chronometer status, as well as the addition of a GMT complication.Despite the advancements we’ve seen throughout the North Flag collection and in the newest edition today, the model remains deeply rooted in Tudor’s history and makes for a fitting addition to its 100th anniversary offerings. The Ranger II from 1973 has served as the historic touchpoint for the collection since its inception. There are several key design codes that create a throughline from the Ranger II to the original North Flag and now the latest edition. These include the black dial with large Arabic numeral hour markers, the arrow-shaped 24-hour and hours hands coupled with an angular seconds hand and a baton-shaped...

Introducing: Chopard L.U.C. 1963 Heritage Regulator And L.U.C 1963 Heritage Chronograph Limited Editions Hodinkee
Chopard L.U.C 1963 Heritage Regulator Sep 1, 2026

Introducing: Chopard L.U.C. 1963 Heritage Regulator And L.U.C 1963 Heritage Chronograph Limited Editions

What We Know While not a part of Geneva Watch Days (which starts this week), Chopard is preempting the show a bit with two new 25-piece limited editions in their L.U.C. line—the brand's in-house haute horlogerie division. The first up (and more expensive of the two) is the L.U.C. 1963 Heritage Regulator, a 40mm by 10.3mm watch in 18k ethical white gold with 30m water resistance. The dial—which conveys hours (in a subdial), regulator-style minutes, GMT, power reserve, running seconds, and date—is a sunburst-finished silver tone with blue-transferred numbers. The caseback showcases the manually wound, four-barrel (in series) L.U.C 98.02-L movement layout that delivers a massive 9 days of power (part of the Chopard Quattro technology). This kind of high-power-reserve movement has become pretty normalized for Chopard and, because of that, I don't think it gets the appreciation it deserves. The movement, running at 4Hz, is also fantastically finished and features a Poinçon de Genève quality hallmark, plus COSC accuracy certification. As mentioned, the L.U.C. 1963 Heritage Regulator is limited to 25 pieces and is now available, retailing for $50,900. On the sportier end of things is the 42mm by 11.48mm 1963 Heritage Chronograph cased in Lucent Steel. It features a deep blue sunburst-polished, galvanic-treated dial, an eggshell-colored printed dial, and Rhodium-plated white gold hands for the hours, minutes, seconds, chronograph, and 30-minute and 12-hour counters. The wa...

Introducing: TAG Heuer Monza Flyback Chronograph Carbon Limited Edition Hodinkee
TAG Heuer Monza Flyback Chronograph Carbon Sep 1, 2026

Introducing: TAG Heuer Monza Flyback Chronograph Carbon Limited Edition

What We Know This weekend, Formula 1 returns to Ferrari's home track (for the series, at least) of Monza, and with that return, TAG Heuer is releasing a new version of the eponymous Monza Flyback Chronograph. The watch was originally released in 1976 to celebrate Ferrari's return to the top with the constructors' and drivers' Formula 1 championships, with its black-coated case setting the stage not only for the model's future but also for similar releases from Heuer (and later TAG Heuer). A Monza isn't a Monza unless it's black, so this new release fits the remit perfectly: a 42mm by 15.22mm case in forged carbon, with red accents on the dial. Often known as the Niki Lauda (after the driver who won the title in 1976), the original watch featured a lot of red (and was reissued over a decade ago), though the dial layout has changed significantly from the original. This time, that red has been swapped around, with accents on the minute-counting and chronograph hands, the combination pulsometer and tachymeter flange scale, and the flyback mark at 6 o'clock. The date is still included, moved to 9 o'clock (which in turn puts running seconds at 6 o'clock), but with an angled window. The indices are all printed, and the hands and hour markers use white Super-LumiNova. The watch is powered by the COSC-certified Caliber TH20-12 automatic movement, running at 4Hz. TAG Heuer didn't provide specifications here, but past versions of the Monza with this movement had an 80-hour power rese...