Results for COSC

Introducing: Formex Reef Radiant Bronze COSC 300M For Collective (With Live Pics)

A handsome, modern, and feature-rich limited dive watch with a striking bronze dial.

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

This surprising precious metal diver is ready for Summer.

A Week On The Wrist: The Baume & Mercier Clifton Baumatic COSC

An excellent everyday watch at an everyman price.

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

SIHH 2018: The New Baume & Mercier COSC-Certified Baumatic

Baume & Merceir unveils the new Clifton Baumatic is resistant to at least 1500 Gauss, thanks to the use of the non-ferromagnetic elements.

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 […]

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.

Introducing: Serica Downsizes Its Field Chronometer With The 35mm Ref. 7505

What We Know It's time to put aside the debate of big watches versus small watches. I think we can at least agree that options are a good thing, so everyone can get what they want. With that in mind, Serica has released three new, smaller Field Chronometer watches measuring only 35mm by 9.6mm thick with a COSC-certified automatic movement and three new enamel dials. These three new watches, with stainless steel cases, play off the design language of the ref. 6190 with a few tweaks. There's the slightly larger, fixed bezel with pips at 3, 6, 9, and 12 o'clock. They have a double-domed anti-reflective sapphire that should somewhat magnify the smaller dial. The two-tone cream-and-black "Tuxedo" dial is similar to the ref. 6190 TXD, with hand-applied numerals. The other two, the "Minute Critical" dials in black or olive green, aren't that far from the ref. 6190 "Denali" that is already on offer in a larger size, with added 5-minute Arabic numerals. All three have Super-LumiNova C3 lume. Inside the case is the SoProd M100 movement, which is COSC-certified for accuracy, making it a Field Chronometer in both name and function. The caliber runs at 4Hz, is self-winding, and has a 42-hour power reserve. According to Serica, it also has a decorated plate with Côtes de Genève, and while there are no photos of the caseback, I would assume it is still a closed caseback like its big sibling.  Then there's the final major update: the watch comes with a redesigned Bonklip bracelet, fea...

The Next Chapter of the Breitling Chronomat Brings a Whopping 22 New Additions

As the saying goes, variety is the spice of life, and with Breitling’s release of a staggering 22 new models to its Chronomat lineup, it just might be true. The model is pretty iconic, starting as a pilot’s watch for military forces and later becoming a cultural phenomenon, with one of its claims to fame being its appearance on Jerry’s wrist across Seinfeld. The latest chapter of the collection covers the Chronomat B01 42, Chronomat Automatic B31 40, and Chronomat Automatic 36, giving Breitling’s signature sport watch a full refresh across size, movement, and material options.  The Chronomat B01 42 remains the main chronograph in the revamp, with a few updates aimed at making the watch look (and feel) a little better on the wrist. For starters, the case thickness has been slimmed from 15.1mm to 13.77mm, the crown guard has been reduced, and Breitling has removed the 1/100 scale from the rehaut for a cleaner dial. All of these updates may seem a bit inconsequential, but when brought together, they add up to an overall sleeker profile that’s meant to “enhance its simplicity,” as noted by Breitling’s Head of Design, Pablo Widmer.  The B01 42 is powered by the COSC-certified Breitling Manufacture Caliber 01, which offers approximately 70 hours of power reserve. In stainless steel, it comes with the choice of a white, blue, or green dial, each with black chronograph counters. The range extends with several additional variations, including a two-tone steel and ...

Introducing: The Longines Legend Diver 59 Offers A More Rugged Look In A Larger Size

What We Know For collectors, the Longines Legend Diver seemingly hit a sweet spot in sizing during its 39mm refresh back in 2023. But, as with many things in life, you can't please 'em all with just one version. So today's new Legend Diver 59 offers a much larger interpretation of the brand's tribute to its 1959 design, in a 42mm model that will surely make a lot of larger wrists happy. It's not the brand's only 42mm Legend Diver, technically speaking, since some older models are still listed in the catalog. But it's the first larger size to have come out since that 2023 refresh. The 42mm case has a thickness of 12.85mm and a lug-to-lug measurement of 50.1mm. As customary with the Legend Divers, two crowns sit on the right side of the case, with the one at two o'clock for rotating the internal bezel and the one at four o'clock to wind and set the time. What this new Legend Diver 59 offers as a new design touch comes in the dial. Whereas the current generation Legend Divers sport glossy lacquer dials, this Legend Diver 59 has a matte black grained-texture dial and internal bezel for a more rugged look. Adding to that aesthetic are new sandblasted hands and indices, which are then paired with three-dimensional Super-LumiNova accents in an old radium color. The Legend Diver 59 is COSC-certified, thanks to the ETA-manufactured but exclusive-to-Longines automatic caliber L888.6. It's a distinctly modern caliber, featuring a silicon balance spring and a power reserve of 72 hours...

Introducing – The Parmigiani Fleurier Tonda PF Chronograph 40mm, Now in Rose Gold

Parmigiani Fleurier’s luxury sports watch collection, the Tonda PF, got off to a flying start with the release of not one but two chronographs in its inaugural 2021 lineup. Led by the refined Split Seconds in platinum and the high-frequency COSC-certified integrated manufacture movement powering the steel Tonda PF Chronograph, the collection may be understated […]

Introducing: The Tudor Black Bay Chrono “Carbon 26”

What We Know Ahead of this weekend's Miami Grand Prix, Tudor has announced the Black Bay Chrono "Carbon 26," a follow-up to last year's Carbon 25. While Tudor's ties to motorsport date back to the late 1960s with the Tudor Watches Racing Team, its current partnership with the Visa Cash App Racing Bulls team began in 2024, and they have been quick to make the most of it, with two limited editions in two consecutive seasons. The Carbon 25 marked the first limited-edition release from that relationship, with the Carbon 26 continuing the same approach in 2026. At its core, the update centers on a revised color scheme reflecting the livery of the VCARB 03 car. The watch retains a 42mm carbon fiber case with a fixed tachymeter bezel, along with a titanium caseback, crown, and pushers with a black PVD finish. The dial remains "racing white," now with yellow accents and carbon fiber subdials. The carbon fiber case, introduced last year, carries over unchanged. It replaces the steel case used in standard Black Bay Chronographs, while keeping the same 42mm diameter, fixed tachymeter bezel, screw-down crown, chronograph pushers, and overall case profile. Inside is the Manufacture Chronograph Calibre MT5813, an automatic chronograph with a column wheel, vertical clutch, silicon balance spring, and a 70-hour power reserve. It is COSC-certified, and it also meets Tudor's more rigorous standards of -2/+4 seconds per day. The Black Bay Chrono "Carbon 26" is priced at $8,625, produced in a...

Introducing: The New Chopard L.U.C. Chopard Strike One In Titanium (Live Pics)

What We Know Among the more attractive releases from Watches and Wonders this year is the new Chopard L.U.C. Strike One Titanium, now with a beautiful new dial treatment. In ethical 18k rose gold with salmon-colored galvanic treatment, with a hand-guilloché central medallion with a honeycomb motif, the Strike One is a watch that may fly under the radar for some. Not a minute repeater, not a grande et petite sonnerie, but rather a beautiful watch that chimes once at the top of the hour (a sonnerie au passage), it's still got a very romantic quality about it. Despite being a chiming watch, Chopard has (as they usually do) minimized the size as much as possible with a 40mm by 9.86mm case in Grade 5 titanium. That light metal should help emphasize the chime's sound, with the hammer on the dial side visible through an aperture for the full experience. Even better, the gong is made of sapphire and is connected in a monobloc construction (one piece) to the dial crystal to emphasize sound transmission. The dial itself is capped by a snail-shaped chapter ring and has rhodium-plated hour markers and hands, plus anthracite-colored printed transfers. This is all powered by the L.U.C. 96.32-L. With a two-barrel construction and micro-rotor, you get 65 hours of power reserve, automatic winding, and a 4Hz beat rate, all chronometer-certified by COSC, with Poinçon de Genève-certified quality. Chopard really shows bigger brands how to do it when it comes to finishing, so this is the kin...

In-Depth: TAG Heuer's New Monaco 'Evergraph' Swaps Levers and Springs for Flexible Nickel-Phosphorus Parts – Here's How it Works (Live Pics)

Developed by the TAG Heuer Lab, in close collaboration with Vaucher, the new chronograph, with TH-Carbonspring, COSC-Certification, 5Hz balance, and more, is one of the brand's proudest achievements yet.

Watches & Wonders: The Chopard L.U.C. 1860 Chronometer, Like the Original from Three Decades Past, May be Worth The Wait

Louis-Ulysse Chopard founded his eponymous watch company in 1860, but it took over 100 years for the brand to truly come into its own. In 1996, and after three years of development, the company debuted its own in-house movement. The wait seemed to have been worth it. The L.U.C 96.01-L immediately drew acclaim for beautiful finishing, embracing the microrotor, and COSC certification. It, and the subsequent L.U.C. 1860 dress watch, marked a sea change from reliance on third parties to true independence, arriving at a resurgence in fine mechanical watchmaking. Thirty years later, the L.U.C. family has expanded into dozens of variants, complications, and movements. But at 2026’s Watches & Wonders, Chopard pays tribute to 30 years of in-house manufacturing with a continuation of that vaunted original. The L.U.C 1860 Chronometer uses the same dial and microrotor movement from 1996, albeit with their own upgrades and unique design tweaks.  The intricate white-gold dial features guilloché finishing in the center, emanating in scalloped waves from the Chopard logo and nameplate. The concentric circles are separated by thin bands of white gold, and delicate spear-shaped markers point inward, toward the dauphine hands. At 6 o’clock, the small-seconds dial echoes the twin-circle pattern of the overall dial, and Chopard specifically mentions the lack of a date window “to preserve purity.”  Where the first L.U.C. 1860 had a white dial with gold accents, this Chronometer wears...

Live from WWG26: new Ressence release

We are now at Ressence, and we are viewing the Type 11, the first movement made by Ressence. RW01 is the first movement which is COSC compliant with an integrated movement with the ROCS, and usable across all Ressence watches. This has 60 hours power reserve from the double barrel. The movement is manufactured byRead More

Watches & Wonders: Tudor Introduces the Black Bay 54 Blue

Tudor continues to expand their Black Bay 54 collection at this year’s Watches & Wonders with the Black Bay 54 “Blue”. Since the launch of the original Black Bay 54, the diver has settled into a role as a favorite among enthusiasts for its slender, compact proportions. The original release was a straightforward black dialed, black bezel affair, and last summer saw the surprise launch of the “Lagoon Blue” reference that re-characterized the watch as a fun, more jewelry oriented diver than we would have expected. A diver with a blue dial and bezel is frankly something expected in a dive watch lineup these days, so this release is not so much a surprise, but it’s interesting to see how Tudor executes on a dive watch standard.  In terms of specs, there are no big surprises here, and this edition of the 54 follows those that have come before. The case in stainless steel measures 37mm in diameter and has water resistance to 200 meters. It runs on the same MT5400 movement, which is COSC-certified and has a silicon balance spring and 70-hour power reserve. It’s available on both a rivet style three link bracelet or a rubber strap.  The blue dial is very, very blue. Tudor refers to it as “sapphire blue” and in the bright lights of their booth at Palexpo the sunray finishing and almost purple-ish hues are quite prominent on the dial. It’s very saturated, and I think even in less intense lighting it will have a lot of presence. If you compare it to other blue wa...

A Legend is Born: Squale Just Dropped a New 37mm Diver

If you have been following us for a while, you are likely well versed in Squale’s divers, vintage-inspired designs, and limited edition runs. The brand has quietly been a leader in the realm of dive watches since the 60s with a cult following from hardcore dive watch nerds. In the past decade in particular, Squale has been getting more and more traction and recognition. In 2019, the brand notched its 60th anniversary and with that, introduced a new collection: the Sub-39. This limited edition fittingly paid homage to Squale’s early 1960s divers, using an original prototype with a 39mm case as reference. Following its success, the brand ultimately made the Sub-30 a permanent collection, upping the ante with COSC-certification and complications like a GMT. Today, we get the next evolution with the Sub-37 Legend. Focusing on the brand’s core tenants – proportions, function, and character – the new slightly sized down 37mm diver emphasizes form over function in a way that is faithful to the golden age of diving, an era when watches were designed to perform rather than to impress. Beginning with the dial, you have a fairly quintessential execution in matte black with a sapphire glass-box crystal reminiscent of vintage plexiglass while ensuring durability and optimal dial legibility. Visibility remains at the forefront of this utilitarian design with both the dial and hands treated with SuperLumiNova Old Radium. Framing the dial is a clean, highly readable unidirection...

Hands On: Christopher Ward C63 Sealander True GMT

The Christopher Ward C63 Sealander True GMT fills a conspicuous gap in the brand’s catalogue with a proper ‘flyer’ GMT, complete with an independently adjustable local-time hour hand. A handsome, expensive-looking dial conceals the new CW-002 movement, which is COSC-certified and offers a five-day power reserve - a rare pairing. While collectors have noticed that Christopher Ward’s pricing has risen steadily in recent years, the True GMT makes a compelling case that the technical substance has kept pace. The journeyman brand Christopher Ward (CW) is a brand that is evolving unusually rapidly, and seems to have been in a state of almost constant transformation since it was founded in 2004. The brand has cycled through a number of different logos in a fairly short period of time, which has confused collectors. The product mix has also shifted, reflecting more upmarket ambitions that have priced out fans of the brand’s early budget products. This instability has turned off some collectors, which is understandable - most luxury brands are fairly conservative, in part to emphasise the long-lasting social capital that comes with a purchase. That said, CW seems to have finally found an identity worth sticking to. The new logo, which combines England’s St. George’s Cross and the white cross of the Swiss flag, is simple and appealing, and concisely communicates the English/Swiss origin. And while it’s true that prices have crept up, the brand has increased innov...

Serica’s New Dive Watch Has A Lot More Going On Than Just A Date Window

The Serica 5330 is the brand's first date-equipped dive watch-a 39mm, COSC-certified chronometer with a new dial and ceramic bezel.

The Sky Chief Returns: Benrus Bets on Heritage, Restraint, and a 36mm Case

The Benrus Sky Chief returns in a faithful 36mm reissue with a COSC-certified ETA 2894 and vintage-inspired dials.

Christopher Ward C63 Valour Review: The Best Chronograph Under $1,000?

A hands-on review of the Christopher Ward C63 Valour Chronograph, a COSC-certified quartz military chronograph priced under $1,000.

Meistersinger Introduces the Archao

The one handed watch is a curious thing. On the face of it, it seems illogical. On a mechanical watch, stripping away a more precise minute hand in favor of a single hour hand negates one of the things enthusiasts covet most: precision. Or, at least, the relative precision. Things like COSC certification and the hard work and ingenuity that go into making mechanical movements become secondary when you pull back sufficiently far from an ability to clock the time to the exact second (indeed, the COSC will not certify any watch without a seconds hand).  But removing that hand is additive, as well. It forces the designer of a watch to think very critically about how that hand is going to tell the time, and the thing that actually defines one handed watches is not so much the fact that they only have a single hand, but the way in which that hand interacts with any timing markers on the dial. There are different approaches, of course. Avant-garde designs might strip out markers altogether, so that a dial’s texture or material can be the singular focus of a piece. This, to me, feels like the most jewelry oriented option possible. Another approach, and the one most often favored by Meistersinger, a brand known primarily for their one handed watches, is to focus like a laser on readability at a glance, designing markers and indices that are large enough and graduated to a degree that makes it relatively easy to get the precise time at a glance. I often think about the time I spe...

Our Favorite Chronos Of 2025

Chronographs are one of the most popular and yet under-appreciated watches out there. While we might take them for granted due to the relative ease of finding a nice one at just about any price point, the watchmaking on display can be as impressive as that from more exotic complications. 2025 was a fantastic year for fans of the chronograph with Omega releasing a manual wind iteration of their sportier ceramic take on the Speedmaster. And then there’s Breguet, who have been on a roll all year. Let’s take a look at our favorite new chronographs for this year and while not all of them made the list, there are some particularly robust honorable mentions here. [toc-section heading="Longines Spirit Flyback Chronograph"] The Longines Spirit Flyback Chronograph was given a refresh that, in my opinion, puts it in the running for one of the best chronographs out there period. It was previously offered only in a 42mm case but now comes in a fantastic compact 39.5mm wide stainless steel case that comes in at a lug-to-lug height of just around 47.4mm. Of course, it’s not just the case diameter that matters, it’s also the thickness and the reduction from a hefty 17mm to 13.4mm is truly transformative. The L792.4 calibre movement is a manual wind take on the Valjoux 7750 that also gets a contemporary makeover with a silicon balance spring and COSC certification on top of the 68-hour power reserve. While the price of $5,350 on strap and $5,500 might not shout “value” to some,...

Albishorn’s Type 10 Officer Takes Flight

The Albishorn Type 10 Officer is the latest expression of the brand’s “imaginary vintage” philosophy, reworking the familiar codes of the mid-century military chronograph through the lens of a hypothetical Type 20 predecessor. Conceived by founder Dr Sébastien Chaulmontet, the cream-dialled Officer pairs its distinctive, parchment-like textured dial with a proprietary monopusher movement derived from a re-engineered Valjoux 7750 architecture, combining COSC-certified performance with thoughtful ergonomic and aesthetic refinements at a price that undercuts many conventional aviation-inspired chronographs. Initial thoughts Military aviation-inspired watches are a cornerstone of the luxury watch market, but most pay homage to specific historical references like the famed Type 20 of the 1950s. In contrast, the Albishorn Type 10 proposes to ‘recreate’ a hypothetical Type 20 predecessor. The cream-dialled Officer takes this idea further, suggesting a “missing link” is the aesthetic development of the military chronograph, with a lighter-coloured dial for open-air usage away from the front lines. When the Type 10 debuted with black and green dials, I was a bit skeptical of the texture, which reminded me of asphalt. The Officer’s dial features a similar texture, but the off-white colour transforms the look. To my eye, the new dial looks like vintage German etching paper, which is an appealing texture that suits the theme of the watch. Inside, the Officer is as com...

Introducing – The Brellum Pandial Power Reserve Black Titanium Chronometer LE

Independent and proudly small-scale, Brellum thrives carving its niche in modern Swiss watchmaking. Founded by fourth-generation watchmaker Sébastien Muller, the brand produces only 299 pieces per year, each officially COSC-certified, meticulously decorated, and sold directly to end consumers. Following the recent release of the Pandial Power Reserve Chronometer LE in steel, Brellum now offers a […]