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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.

Introducing: Article Prep Hodinkee
Jul 29, 2026

Introducing: Article Prep

What We Know TK What We Think Something someone said someone. TK The Basics Brand: Model: Reference Number: Diameter: Thickness: Case Material: Dial Color: Indexes: Lume: Water Resistance: Strap/Bracelet: The Movement Caliber: Functions: Diameter: Thickness: Power Reserve: Winding: Frequency: Jewels: Chronometer Certified: Additional Details: Pricing & Availability Price: Availability: Limited Edition: For more, click here.

Citizen Garrison BM8560 vs TAG Heuer Autavia: An Affordable Pilot Watch Alternative? WatchRider
TAG Heuer Autavia Jul 24, 2026

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...

Serica Introduces the new Ref. 7505 Worn & Wound
Serica Introduces May 21, 2026

Serica Introduces the new Ref. 7505

One of my favorite things is when a brand releases a watch that feels like the watch they always should have made. I’m sure we can all point to examples of this – that feeling that a new watch really belongs in the brand’s catalog, and we’re kind of surprised it never existed in the first place. That’s sort of how I think about the latest release from Serica, the Ref. 7505 Field Chronometer. Doesn’t it seem like Serica always had a 35mm field watch in their collection?  More than any other watch the brand has released to date, this feels like a distillation of what the brand is really about. You’ll recall that they launched with a collection of military inspired field watches all the way back in 2019, which at the time felt like they were already going a little against the grain at just under 38mm in diameter. In the years since, they’ve iterated on this general idea, with an ongoing series of sporty selections rooted in a kind of imagined vintage world, never borrowing too much from any one classic reference, but pulling from a variety of sources to create something that is uniquely their own. Part of that has always meant keeping the watches fairly compact. Looking over the press materials for this watch and thinking about the direction the brand has gone in, I wonder if, if circumstances had been different, they may have started here, with a 35mm field watch, to begin with.  This is unquestionably the right time to introduce a watch like this, at a mom...

Introducing - The Parmigiani Fleurier Tonda PF Chronograph 40mm, Now in Rose Gold Monochrome
Parmigiani Fleurier Tonda PF Chronograph 40mm May 13, 2026

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 […]

First Look - The Two-Tone & Chocolate Girard-Perregaux Laureato Chronograph 42mm Monochrome
Girard-Perregaux Laureato Chronograph 42mm May 7, 2026

First Look - The Two-Tone & Chocolate Girard-Perregaux Laureato Chronograph 42mm

The Laureato is Girard-Perregaux’s answer to the integrated luxury sports watch. Born in 1975 as a chronometer-certified quartz sports watch, Girard-Perregaux revived the Laureato in 2016 as a limited edition to celebrate the brand’s 225th anniversary, and later as a collection in 2017. Produced three years after Gérald Genta’s landmark Royal Oak but a year […]

First Look - The New Zenith G.F.J. in Tantalum and Yellow Gold, Continuing the Legacy of the Calibre 135 Monochrome
Zenith G.F.J Apr 15, 2026

First Look - The New Zenith G.F.J. in Tantalum and Yellow Gold, Continuing the Legacy of the Calibre 135

When Zenith brought back the legendary Calibre 135 last year in the G.F.J. collection, it was a tribute to its 160-year history. Also, it signalled the return of one of the most celebrated chronometer movements. Now, the brand expands the collection with two new G.F.J interpretations: a tantalum edition with an onyx dial and diamonds, […]

In Depth: Laboratoire de Précision SJX Watches
Omega Constellation Observatory we were Apr 9, 2026

In Depth: Laboratoire de Précision

Alongside the launch of the Omega Constellation Observatory, we were among the first members of the public granted access to the Swatch Group’s Laboratoire de Précision (LP), a new independent chronometer testing institute with facilities in Omega’s native Biel/Bienne and Villeret. The new organisation does not redefine chronometer norms, but it has developed a new acoustic certification process that is more automated and provides client brands with a richer performance data set - a unique capability that has implications beyond mere certification. Laboratoire de Précision. Image – Omega Initial thoughts The debut of the Constellation Observatory, the first watch certified by LP and the first-ever two-handed Master Chronometer, was greeted with a mixed feedback from both collectors and the press. Some found the choice to launch a chronometer without a seconds hand heretical, viewing it as a gimmick to promote LP’s new testing process. The Omega Constellation Observatory is the first watch to complete chronometer certification at LP. Regardless of how one feels about the two-handed aspect of the watch - I found the design balanced and appealing, even if the concept is a bit quirky - the launch placed a renewed focus on the way official chronometers are tested and certified. Many were confused by the claimed novelty of acoustic testing, given the universal presence of Witschi machines on watchmakers’ benches. Indeed, the method is not new. What is new is t...

Hands On: Omega Constellation Observatory SJX Watches
Omega Constellation Observatory Mar 30, 2026

Hands On: Omega Constellation Observatory

At long last, Omega has unveiled the spiritual successor to the beloved ‘Pie Pan’ Constellation, complete with its signature domed dial, observatory medallion, and ‘dog leg’ lugs, the Constellation Observatory. First teased on the wrist of actor Delroy Lindo at the Academy Awards, the Observatory debuts in an expansive range of case materials and dial treatments. The collection also marks the commercial debut of Swatch Group’s Laboratoire de Précision, which has developed a new chronometer testing process capable of certifying two-handed watches. As a result, the Observatory carries the unexpected distinction of being the first Master Chronometer that displays only the hours and minutes. The Observatory in 18k Sedna gold, the brand’s trade name for its proprietary rose gold alloy. Initial thoughts The Observatory embodies Omega’s strengths, capitalising on the brand’s historical pedigree and proprietary materials and technologies, including its own durable alloys and the co-axial escapement. The Observatory in steel. On the other hand, the Observatory suffers somewhat on account of its thickness, relying on a movement platform developed at a time when the trend toward large watches appeared to have no end in sight. That said, the case design does a decent job of reducing the perceived thickness, and it looks and feels thinner than many other watches that share its dimensions on paper. It also demonstrates the immense capabilities of the broader Swatch Grou...

Hands On: Christopher Ward C63 Sealander True GMT SJX Watches
Christopher Ward C63 Sealander True GMT Mar 19, 2026

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...

Meistersinger Introduces the Archao Worn & Wound
Meistersinger Introduces Feb 17, 2026

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...

Affordable Vintage: the Longines Grand Prize Worn & Wound
Longines Grand Prize Longines Feb 4, 2026

Affordable Vintage: the Longines Grand Prize

Longines is a storied and well-respected Swiss watch manufacture that formed in 1832 and has continued uninterrupted to this day. From the first wrist chronometer in 1911, to groundbreaking flyback chronographs in the 1930s, to the world’s first hi-beat wrist chronometer in 1959, Longines holds their own in the watchmaking world.  My favorite period for watches is the 1950s through the 1970s and Longines was one of the top accessible brands during that time. In 1954 Longines began a marketing strategy of product families, launching the Conquest line of watches. In 1957 they introduced the Flagship line, adding to what would become a large group of watch families, many of which are still made today. Other lines that came later include the Admiral, the Ultra-Chron and the Grand Prize. The Grand Prize line was named in honor of the multitude of watchmaking awards and honors that Longines had accumulated over the decades. It was a relatively short-lived family, produced from about 1958 to 1964 according to my research. I have found that the majority of Longines watches produced during these decades were all fairly equal in quality and craftsmanship, with most of the differences in the families being design related. The Conquests were rugged and sporty, on par with the early non-diver Omega Seamaster watches. The Flagship series were dress watches, while the Admiral line was a mixture of both. The Grand Prize family were pretty much all thin, elegant everyday type dressier w...

Albishorn’s Type 10 Officer Takes Flight SJX Watches
Albishorn s Type 10 Officer Dec 15, 2025

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...

Hands On: Chopard L.U.C. Grand Strike SJX Watches
Chopard L.U.C Grand Strike Dec 11, 2025

Hands On: Chopard L.U.C. Grand Strike

The 30th anniversary of the Chopard L.U.C. manufacture was one anniversary among many this year, but it will likely be remembered thanks to the Grand Strike, the most complicated watch in Chopard’s history and its first grande sonnerie. Building on the successful Full Strike minute repeater architecture and making full use of the brand’s patented sapphire gongs, the Grand Strike is a chronometer-certified two-train clock watch with a push-button minute repeater. In this context, the presence of the tourbillon is almost a footnote. Initial thoughts I can count on one hand the number of brands that have created their own grande sonnerie wristwatch. It’s one of the few things in watchmaking that’s proven challenging enough to still be rare, even in the days of computer-aided design (CAD) and advanced manufacturing technology like wire erosion. For this reason, the grande sonnerie has a towering cultural presence among watchmakers and collectors, looming above all other complications. For Chopard, the Grand Strike represents the culmination of 30 years of the L.U.C. manufacture, the brand’s haute horlogerie division. The first impression of the Grand Strike is one of extraordinary depth. There’s not much of a dial, save for the minutes scale etched on the inside of the sapphire crystal, and the small concentric sub-dials for the dual power reserve displays. This depth shrinks the watch visually, and it feels dense and compact despite its rather large 43 mm size and...

In-Depth: Breguet’s Constant-Force Magnetic Escapement SJX Watches
Breguet s Constant-Force Magnetic Escapement Dec 4, 2025

In-Depth: Breguet’s Constant-Force Magnetic Escapement

Earlier this week, Breguet rounded off its grandiose 250th anniversary with the unexpected launch of the Expérimentale 1 chronometer in Paris. Showcasing modern Breguet’s most impressive innovation to date - a magnetic constant-force escapement - the watch left many scratching their heads simply because the novel invention defies easy explanation. Here we explain the actual functioning of this remarkable invention, and why it represents such a significant step forward in terms of chronometry and escapement technology. The origins of the concept Before turning to the decidedly modern and futuristic Expérimentale 1, we must first take a short trip to the past and consider how the idea of using magnets in mechanical escapements first came to life. For that we must turn to the late 1930s, when Cecil Frank Clifford, Fellow of the British Horological Institute (BHI), started experimenting with oscillators maintained by magnetic rails or escape wheels.  He was granted a British patent in 1954 for a variety of magnetised escape wheels paired with elastic vibrating magnetic blades. The device would operate silently and Clifford envisioned it being used for naval underwater torpedoes, so the lack of ticking would be harder to pick up by sonars.  Iterations of Clifford magnetic escapements. His designs were rudimentary. The principle was that the escape wheel would be braked by a vibrating pair of magnetised blades (in several possible configurations), while simultaneously ...

Breguet’s Magnificent Magnetic Expérimentale 1 SJX Watches
Breguet s Magnificent Magnetic Expérimentale Dec 1, 2025

Breguet’s Magnificent Magnetic Expérimentale 1

Breguet concludes its 250th anniversary with the brand’s most forward-thinking watch, the Expérimentale 1 that boasts a magnetic, true constant force escapement. Equipped with a frictionless escape wheel and pallet lever driven by magnetic forces, the movement runs at 72,000 beats per hour, or 10 Hz – arguably making the Expérimentale 1 the ultimate Breguet chronometer. Impressively innovative with its use of silicon, magnets, and clever teeth geometry, the limited edition watch also marks the start of the Expérimentale line, a collection that will serve as a platform to debut new complications, technology, and designs. Initial thoughts While some might have been expecting an updated Sympathique, Breguet instead surprised with perhaps the most advanced wrist-borne mechanical chronometer in modern watchmaking. Taking cues from Abraham-Louis Breguet’s own “constant force” escapements, Breguet today harnessed the power of permanent magnets and unique teeth geometry to built a genuinely friction-less, constant torque escapement. In fact, the new escapement appears to be the only truly frictionless and constant force escapement on the market today.  Magnets have been employed in escapements in the past, but this approach was historically unreliable. Breguet appears to have discovered the right formula for a magnetic escapement. Several functioning prototypes were on show at the launch event. Moreover, Breguet chief executive Gregory Kissling explained that the ma...

Highlights: Pocket Watches at Phillips Hong Kong SJX Watches
Patek Philippe Nov 14, 2025

Highlights: Pocket Watches at Phillips Hong Kong

The upcoming Phillips Hong Kong auction includes a diverse and spectacular selection of pocket watches spanning two centuries. From early 19th‑century enamel masterpieces crafted for the Chinese market to 20th‑century tourbillon chronometers that triumphed at observatory trials, the lots on offer demonstrate the technical and aesthetic evolution of the watch over the last two hundred years. Lot 1086 – S. Smith and Son No. 1899-1 Tourbillon Chronometer with Kew Class A Certificate Albert Pellaton-Favre constructed the first of two tourbillons in the auction, which was later retailed by S. Smith & Son. The other, by Patek Philippe, is the work of his son, Jämes-César Pellaton. Both are depicted in Reinhard Meis’s famous Das Tourbillon. The English and Swiss disagreed on what constitutes a chronometer. The English argued that a chronometer must use a chronometer (detent) escapement, while the Swiss considered any watch a chronometer if performed well enough – which the English would call a “Half-Chronometer”. As the Willis enamel dial boasts, the first is a chronometer by both English and Swiss reckoning, with a spring detent escapement and “Especially Good” certificate from the Kew Observatory. While S. Smith and Son retailed quite a number of tourbillons, including others with detent escapements, most were sourced locally, while the present lot uses a Swiss movement. The London branch of Baume Frères ordered six tourbillon chronometers from Albert Pella...