Results for Chronometer (COSC)

SIHH 2015: Montblanc Heritage Chronométrie Quantième Annuel Vasco da Gama with Price

Montblanc Heritage Chronométrie Quantième Annuel Vasco da Gama

Introducing: The Jaeger-LeCoultre Master Control Chronometre, A New Integrated Bracelet Sport Watch In Three Models (Time/Date, QP, And Power Reserve)

Jaeger-LeCoultre stakes its rightful place in the integrated bracelet sport watch arena with a new ultra-thin model line.

The Revolutionary List: 24 Technically Brilliant Watches – F.P. Journe Chronomètre Optimum

The Revolutionary List: 24 Technically Brilliant Watches – Breguet Classique Chronométrie 7727

The Revolutionary List: 30 Pioneering Watches – the F.P. Journe Chronomètre à Résonance

A Closer Look: F.P. Journe Chronomètre Furtif

REVIEW: Hands On With The King Seiko KSK Burgundy – SPB461

We love a watch with colour, so we were happy to go hands-on with the new King Seiko SPB461 with the burgundy “grape” coloured dial for a week. What We Love The burgundy dial pops The bracelet’s look and feel Easy to wear, set, and forget watch What We Don’t The size may be a little small for some wrists Accuracy could be greater at the price point Darker coloured dial adds more light reflection compared to the lighter dials Overall Rating: 8.25/10 Value for Money: 8/10 Wearability: 9/10 Design: 8/10 Build Quality: 8/10 King Seiko in its modern form hasn’t been around all that long. Having been re-launched in 2021 as a limited-edition re-creation of an original design, it was so successful among watch enthusiasts is was then subsequently launched as a regular lineup in 2022. Interestingly, each model in the King Seiko range is based on an original model from 1965, and when you look at the design codes, style, and sizing, you can see these ’60s vibes coming through. The original King Seiko from 1965. When you compare the original to the modern version, coloured dial aside, you can see exactly where all the design cues originated from. We covered a little bit of the history of King Seiko in our Hands On Review of the blue dial King Seiko KS1969 that Sameera wrote a week ago, and if you’ve not read it yet, then I suggest you check it out here. But in a nutshell, King Seiko started in 1961 when Daini Seikosha (Seiko), having concentrated on ladies pieces star...

First Look – The Serica 6190 Chronomètre M.S.L, the Updated Field Watch

Despite being a relatively young brand (founded in 2019), Serica already carries a consistent collection of retro-inspired sports watches – field, dive and GMT. A project of Je?ro?me Burgert and Gabriel Vachette (both behind French magazine Les Rhabilleurs), all watches are designed to be used and abused with sturdiness, precision and style in mind. Today, […]

Understanding Resonance, Featuring The F.P. Journe Chronomètre à Résonance, Armin Strom Mirrored Force Resonance, And Haldimann H2 Flying Resonance – Reprise

Resonance. No, it is not a Tesla-themed Evanescence cover band. Resonance is a physics principle that, to be honest, most people will never need to know to go about their daily lives. So what is all the hubbub about resonance? It’s a word that is, even in the watch world, so mysterious and rare that it is heard only once or twice a decade. In this article Joshua Munchow explains how resonance works and why it matters.

Review: Montblanc Heritage Chronométrie Ultra Slim

Montblanc is definitely riding the high wind with its new line up. They are challenging prices within the industry and are indeed making the news. Like with this ultra slim, we thought it was executed exceedingly well and serves its intended purpose. The only qualm that we have with it, is its uncanny similarity to Jaeger LeCoultre's Master Compressor collection.

Elegance Meets Accuracy - Going Forward, All Of Serica’s Watches Will Be COSC-Certified Chronometers

Any young watch brand constantly has to make choices about designs, costs, quality, and many other aspects that affect the organization every day. In the case of Serica, a young Parisian brand founded in 2019, elegance, reliability, and accuracy steer the decision-making process. In terms of elegance, I don’t think there was anyone who thought […] Visit Elegance Meets Accuracy - Going Forward, All Of Serica’s Watches Will Be COSC-Certified Chronometers to read the full article.

Does Mido deliver the best value COSC-certified Swiss in-house chronometers available in 2021?

Is this headline a valid question, a bold claim, or simply the stone-cold truth? My knowledge of the Mido brand has recently been re-ignited. The Swiss brand has been in the game for more than 100 years, but my awareness previously centred on their vintage reissues. I see Mido’s DNA represented in the delightful ’60s … ContinuedThe post Does Mido deliver the best value COSC-certified Swiss in-house chronometers available in 2021? appeared first on Time+Tide Watches.

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

COSC Upgrades Standards to Certify More Than Timekeeping

Interesting news just out of Contrôle Officiel Suisse des Chronomètres (COSC), the venerable Swiss chronometer testing body, which has just announced a major revamp to its testing to honour the COSC’s standard’s 50th anniversary. Excellence Chronometer, COSC’s new and improved certification program, goes beyond the ISO 3159 norm that has defined its tests for decades. Instead of just testing movements, Excellence Chronometer will require completed, cased watches to run within -2/+4 seconds a day, as well as pass wear simulation and magnetism tests. Initial thoughts While COSC remains the primary chronometer testing body in Switzerland, thanks largely to Rolex, its protocols have been due for an update for some time now. With the rise of alternative and in-house precision testing programs, the standard chronometer certification can sometimes feel left behind. Rolex’s own Superlative Chronometer certification first requires a COSC certificate, but then makes sure the watches run at -2/+2 seconds per day after further in-house testing. The METAS Chronometer program also requires the standard COSC certificate, but guarantees a regulation of 0/+5 seconds per day and a great resistance to magnetic fields. Seeing that COSC slowly updates and imposes more stringent criteria is a good sign, but it may still not be good enough. With the rise of advanced internal certification programs, it looks like some brands submit their models to COSC testing just to make sure they can...

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 […]

Longines’ Ultra-Chron Classic is a Double-Certified, High-Beat Chronometer

Longines continues to mine its archive to good effect with the Ultra-Chron Classic, a faithful reissue of the brand’s pioneering high-frequency wristwatch first launched in 1967. The Ultra-Chron Classic is more than just a remake of a vintage watch. While it has a clean, period-correct vintage aesthetic, the mechanics are entirely modern, namely a high-beat, 5 Hz automatic movement that is both COSC chronometer and TIMELAB certified. Initial thoughts Longines does well at bringing back beloved designs from the past, but built to modern standards. The Ultra-Chron Classic is the latest in a long line of historical reissues that began nearly two decades ago with the bestselling Legend Diver. The Ultra-Chron Classic is impressively faithful to the original in style, but because of that, not especially exciting in terms of design, retaining the all-business look that was common among high-performance gentlemen’s wristwatches of the era; the same criticism could be leveled at the Jaeger-LeCoultre Geophysic E168 or IWC Ingenieur ref. 666. In other words, the dial, hands, and indices are mostly true to the source material, but this pared-back look may have a harder time standing out in today’s market than it once did. Dressy? Classic? Or plain? Looks aside, the Ultra-Chron Classic is modern Longines at its best: a solid build, a brand-exclusive movement, proper sizing, and sensible pricing. The movement in particular stands out for being notable high-spec with its 36,000 bea...

Interview – Andreas Wyss, CEO of the COSC, on the Need to Adapt and a “Super-COSC” Certification to Come

If you own mechanical Swiss watches, one of them potentially came to you with a COSC chronometer certificate. But not everyone knows exactly what this certificate means. The COSC is the Contrôle Officiel Suisse des Chronomètres or the Official Swiss Chronometer Testing Institute. COSC certifies Swiss-made movements or watches as chronometers (not to be confused […]

Everything you need to know about COSC

What is a chronometer, or what does it mean to be COSC-certified? Here are all the answers.The post Everything you need to know about COSC appeared first on Time+Tide Watches.

Chronometer Certification in Watches Explained: How-To with Tim Mosso (video)

Omega, Tudor, Chopard, and many more watches all boast “COSC Chronometer” status on their watches, but what exactly does this certification entail? In this episode of How-To, Tim breaks down what exactly a watch needs to achieve to get COSC status and what defines a chronometer.

Bulgari reclaims the throne for the world’s thinnest watch with the Octo Finissimo Ultra COSC

As the name implies, it isn't just the thinnest mechanical watch in the world, it is also the world's thinnest COSC-certified chronometer. Wow.The post Bulgari reclaims the throne for the world’s thinnest watch with the Octo Finissimo Ultra COSC appeared first on Time+Tide Watches.

Tudor Introduces A Slimmer Black Bay 58 With Master Chronometer Certification And Another Bracelet For The Black Bay 58 GMT

Tudor expands its lineup of mid-size dive watches with an updated Black Bay 58 and a new bracelet option for the Black Bay 58 GMT. Both watches keep the familiar 39mm case and continue to draw on late-1950s Tudor dive-watch aesthetics. The three-hand model adds technical upgrades, revised case proportions, and Master Chronometer certification. These […] Visit Tudor Introduces A Slimmer Black Bay 58 With Master Chronometer Certification And Another Bracelet For The Black Bay 58 GMT to read the full article.

Fratello Talks: How Much Does Chronometer Certification Matter?

“Chronometer” is one term that frequently comes up in watchmaking. We see it stamped on dials, highlighted in marketing materials, and often used as a synonym for “high quality.” But how much does chronometer certification actually matter to us as collectors? In this episode of Fratello Talks, Nacho is joined by Daan and RJ to […] Visit Fratello Talks: How Much Does Chronometer Certification Matter? to read the full article.

Serica Introduces the 5330 Dive Chronometer

One of watchmaking’s simplest but most iconic complications, the date window, is the source of much admiration, and yes, a little bit of ire. One of the biggest points of contention on any inclusion of a date window is the balancing of it on the dial; after all, how do you place it to not ruin the symmetry (or asymmetry) of a carefully-crafted design? With their new Ref. 5330 Dive Chronometer, Serica has chosen a sleek solution for their first date window inclusion: nestle it at 3 o’clock, taking the place of the marker, and give it a crisp red accent to stand out. Sure, it’s not necessarily revolutionary, but it adds a sophisticated touch to an already clean dial. The core tenets of the 5330’s design carry over from other models in Serica’s Dive Chronometer lineup, with circular hour markers and a double graduation bezel being the most recognizable, and a 39mm 316L stainless steel case housing an identical SoProd M100 Swiss automatic movement. The matte black dial and anthracite-grey outer bezel ring contrast with the steel of the inner bezel and case, and the cream Super-LumiNova on the hands and hour markers. Similarly, the cream date window and red numeral add both a sense of cohesion and a highly legible flash of color to give the dial an extra layer of aesthetic complication. It’s certainly a welcome addition visually, and keeps the design from feeling too austere.  At 12.2mm in thickness and 46.5mm lug-to-lug, the 5330 is sized well for most wrists, and...

Serica Introduces The 5330 Dive Chronometer - The Brand’s First Watch To Feature A Date Window

The guys at Serica take their vintage-inspired designs very seriously. The brand’s watches are all about the perfect proportions, high legibility, and great wearability. Up until now, a date window wasn’t part of that equation. However, as representatives of many brands tell us, some people won’t buy a watch unless it has a date window. […] Visit Serica Introduces The 5330 Dive Chronometer - The Brand’s First Watch To Feature A Date Window to read the full article.

Chronometer Watches Matter - Why The World Of Luxury Needs Accuracy

Having the exact time on hand is nothing special nowadays. Almost always, you’re connected to satellite time (GPS), which is based on atomic clocks in satellites that measure time to 100 billionths of a second. Optimizing accuracy through mechanical parts is a whole other matter and an age-old quest. A chronometer - the word derives […] Visit Chronometer Watches Matter - Why The World Of Luxury Needs Accuracy to read the full article.