Results for COSC

Switzerland’s COSC To Upgrade Chronometer Certification Standards

New standards to show focus on consumer as secretive organization opens up for first time.

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 […]

COSC, METAS or TIMELAB? Why Chronometry Still Matters Despite Atomic Time

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 […]

Breaking News: Move Over COSC - Omega Launches A Brand New Chronometer Certification With The Creation Of The Laboratoire de Précision

It's a bold move made all the more impactful mere days ahead of Watches & Wonders.

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, […]

Introducing: The 40mm TAG Heuer Aquaracer In Full Gold (With A New COSC Movement)

This surprising precious metal diver is ready for Summer.

The First Manual-Wound COSC Certified Speedmaster - The Jubilee BA 148.0052

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 […]

The Formex Essence FortyOne Arctic White is an engineering nerd’s everyday sports watch

We get hands-on with the Formex Essence FortyOne Arctic White, featuring a 41mm suspended case and a COSC-certified movement.

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...

DOXA Finally Made the Titanium Dive Watch I’d Actually Buy

DOXA brings Grade 5 titanium to the regular SUB 300 lineup, with five dial colors, COSC certification, and pricing starting at $3,190.

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

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

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

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...

Christopher Ward Is Openly Trolling Tudor With Its New Biscay Dive Watch

The new Christopher Ward Trident Biscay pairs vintage styling with COSC-certified movements and pricing aimed squarely at its Swiss rivals.

Bell & Ross BR-X5 Meteorite: a solid Muonionalusta dial, not a veneer

Bell & Ross drops a 250-piece BR-X5 with a dial cut from a single slab of the 1906 Muonionalusta meteorite from northern Sweden. 41mm x 12.8mm steel, COSC-certified BR-CAL.323 (Kenissi) with 72-hour reserve. €8,900 on rubber, €9,400 on the integrated bracelet.

New: NORQAIN Independence Skeleton Titanium DLC - blacked out and 82 grams

NORQAIN Independence Skeleton Titanium DLC: the openworked 42mm goes Grade 5 titanium and black DLC at 82 grams, COSC-certified NB08S, from CHF 4,500.

New: Ferdinand Berthoud Chronomètre FB 3SPC.2-1 in rose gold

Ferdinand Berthoud FB 3SPC.2-1 brings the COSC-certified Chronometre FB 3SPC into 18-carat rose gold with a sandblasted nickel silver movement.

Citizen Garrison BM8560 vs TAG Heuer Autavia: An Affordable Pilot Watch Alternative?

I own both the Citizen Garrison and the TAG Heuer Autavia WBE5116.EB0173, and the difference between them goes far beyond price. The Citizen Garrison uses Citizen’s light-powered Eco-Drive movement and a remarkably light Super Titanium case, while the TAG Heuer Autavia is a Swiss automatic pilot watch with a COSC-certified Calibre 5 movement, a 42 mm steel case and a distinctive blue smoked dial. One is accessible and practical, designed for easy daily ownership. The other is a discontinued premium model with strong aviation heritage. That makes this an unusual but revealing comparison. Can an affordable Citizen Garrison provide the same wrist presence, legibility and everyday enjoyment as a significantly more expensive TAG Heuer Autavia? And how much do the Autavia’s automatic movement, finishing, heritage and premium positioning actually change the ownership experience? In this comparison, I will examine their design, comfort, materials, movements, readability and real-world value. For anyone searching for the best affordable pilot watches, or wondering whether an affordable pilot watch alternative can compete with a premium Swiss model, these two watches offer a fascinating answer. Case Size, Quality, and Comfort Both watches are very well made, but I sincerely prefer the Citizen’s case. The TAG Heuer Autavia has the solid construction and clean finishing expected from a premium Swiss watch. Its stainless-steel case feels substantial, and the transitions between i...

The Titanium Treatment: Introducing The Doxa Sub 300 Ti5 Clive Cussler

Doxa is marking what would have been Clive Cussler’s 95th birthday with a new take on its most emblematic dive watch. The Doxa Sub 300 Ti5 Clive Cussler keeps the shape of the 1967 Sub 300 but features a case, crown, case back, and even the dial crafted from Grade 5 titanium. This COSC-certified chronometer […] Visit The Titanium Treatment: Introducing The Doxa Sub 300 Ti5 Clive Cussler to read the full article.

First Look: Doxa SUB 300 Ti5 Clive Cussler, the icon resurfaces in Grade 5 Titanium

The fourth Doxa x Clive Cussler edition. Grade 5 titanium case, sandwich-cut titanium dial in Cussler's signature colours, Sellita SW200-1 COSC-certified movement, 300m water-resistance. Limited to 300 pieces at CHF 2,890 / EUR 3,190 / USD 3,390.

Norqain's Freedom GMT Enjoy Life Holiday Edition Hides a Golden Ticket to the Maldives

500 pieces, a COSC-certified true GMT, and one very lucky buyer flying to Ayada Maldives Resort

Norqain packs a world of fun into the new Freedom GMT Enjoy Life “Holiday” Limited Edition

Norqain’s colourful Enjoy Life collection returns with its first GMT, pairing a travel-themed dial with a COSC-certified GMT movement.

Industry News: Ronda Returns to Mechanical Movements with the Impressive R01

Typically, not a lot happens in the world of third-party mechanical watch movements. The ETA2824 reigned supreme for decades until Swatch Group stopped openly supplying them, giving way primarily to Sellita, Soprod, and La Joux Perret on the Swiss side, and Miyota and Seiko on the Japanese side. For the most part, the catalogs of those brands stayed relatively unchanged for many years, but now, it appears that there’s a bit of an arms race happening. The days of 42-hour power reserves are over, and brands are now vying for features and specifications once limited to more expensive calibers; to that end, there have been a series of interesting events/releases. First, the COSC announced the creation of the “Excellence Chronometer” standard with a -2/+4 accuracy standard among other considerations. Sellita launched the SW200-2 Power + movements with 65-hour reserves, new gear trains, and other improvements. The CEO of La Joux Perret spoke about the upcoming G-200 caliber, which will feature a 72-hour reserve and antimagnetic properties, on the Hodinkee podcast. And this week, a very exciting new automatic was announced by a surprising source: Ronda. The R150 launched in 2016 Ronda is a well-known Swiss manufacturer that was founded in 1946. Over their 80 years of existence, they have specialized in many things, from component manufacturing to ebauchés and full mechanical movements to, beginning in the 1970s, quartz calibers, which is what they are best known for today....

Introducing: Oris Celebrates Its Birthday With The 2026 Hölstein Edition

What We Know Every year on June 1, Oris celebrates the founding of its brand by releasing watches named after its hometown. This time, they're doing so with 250 numbered pieces based on the brand's new Artelier watch. The new version features small seconds, a 120-hour power reserve, the Caliber 401 movement, and an interesting retro-futuristic style. The new Oris Hölstein Edition 2026 has a stainless steel case measuring 39.5mm by 11.1mm, a 45.5mm lug-to-lug, and 30m water resistance. The dial is light grey with a subtle fumé effect from its shape, with a brighter subsidiary seconds dial in a mirror finish and a small red seconds hand. That silver, domed dial and claw-style hour markers make the watch feel a bit like a throwback to the late 1960s, but with modern specifications. The hour and minute hands have Super-LumiNova. As a bonus, the movement (while not COSC-certified) has an accuracy of 3/+5 seconds per day and is highly anti-magnetic. It's also automatic winding. The caseback uses a special laser treatment that engraves the Oris Bear, features the words "Hölstein Edition 2026," and produces a mirror-like, iridescent rainbow finish. To steal the description from one of the greatest haircuts known to man, it's business in the front and party in the back. The watch retails for CHF 3,800. What We Think Oris has been doing these limited editions, as far as I can tell, since 2020, and each one has been anything but traditional. Obviously, the Oris bear often plays a ...

Hands-On: A Triple Review Of The Jaeger-LeCoultre Master Control Chronomètre Collection

We're a few months removed from Watches & Wonders, which gives us some clarity about what was buzz, what was hype, what fell off the wish lists, and what will be a long-term winner. It's looking like Jaeger-LeCoultre had one of the best releases of the fair with the Master Control Chronomètre series. The Master Control line has largely been a dressy take on traditional design cues for a brand people usually think of first for its Reverso. But now, JLC has shown that Master Control can do more. More than just a new case and bracelet, all watches are in-house chronometer-certified 4Hz, 70-hour power reserve movements (COSC does the certification) with a new High Precision Guarantee (HPG) seal, which supplants the former 1000 Hours Control. That new HPG seal means that the brand trials cased watches on four daily-wear specific issues—shocks, positions, altitude, and temperature—over three days, while guaranteeing eight traditional techniques of quality aesthetic finishing. The watches I photographed were brand new and wrapped in plastic, so you have to look past a bit of that to see the quality, but it certainly is there in person. Now with three models in steel and rose gold, with five SKUs (one watch only comes in steel and not gold), measuring 38mm by 8.4mm or 39mm or 9.2mm with 50m of water resistance, the new line brings a lot to the table. Inspired by the brand's Master Mariner Chronomètre line, launched in 1973 as their offering for an integrated bracelet (or adj...

Hands On: Jaeger-LeCoultre Master Control Chronometre

The most talked-about release from Jaeger-LeCoultre (JLC) at Watches & Wonders was the refreshed Master Control collection, which debuted on a surprising integrated bracelet. Available with or without perpetual calendar or power reserve complications, the Master Control Chronometre is powered by the latest version of the brand’s long-running cal. 899, which is now certified by both COSC and a new internal standard called the High Performance Guarantee (HPG). Initial thoughts Since the Master Control Chronometre debuted at Watches & Wonders, I have been asked multiple times whether it is a dress watch or a sport watch. Setting aside the issue of the false dichotomy that exists between these categories, the Master Control Chronometre presents itself primarily as a dress watch on a bracelet. While the bracelet’s angular facets evoke those of the Vacheron Constantin Overseas, the staid Master Control dial is what defines the look. The simple sunray finish and slim hands — not to mention the lack of any lume — firmly root the Master Control Chronometre in the dress watch category. The soft blue and brown dials are each attractive in their own right, with colour-matched date wheels to avoid any harsh transitions. While the text is arguably superfluous, the ‘Chronometre’ label is more interesting than the typical ‘Automatique’ text that mars most Master Control dials. In terms of the value proposition, it’s a tale of two metals. The stainless steel model isn’t...

Serica’s Latest Release Brings Vintage Military Watch Sizing Back in a Big Way

Serica's new Ref. 7505 brings its field chronometer down to 35mm with COSC certification and 200m water resistance. Priced from $1,291.