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Results for Marine Chronometer & The Longitude Problem

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The Greatest Horological Masterpieces of All Time: Breguet’s Marie Antoinette Watch and Its Impact on Horology Worn & Wound
Breguet s Marie Antoinette Watch Nov 25, 2025

The Greatest Horological Masterpieces of All Time: Breguet’s Marie Antoinette Watch and Its Impact on Horology

A series of features identifying the most extraordinary mechanical masterpieces in history, blending precision, innovation, and craftsmanship. We all have our favourite timepieces either in our collection or those incredible horological masterpieces that have been invented or created through the ages. This series will showcase examples from the previous centuries up to the present day and look at the importance and impact on modern day timekeeping. Few watches in history have captivated the world quite like Breguet No. 160, often referred to as the Marie Antoinette Watch. Commissioned in 1783, this masterpiece of horology was intended as the ultimate expression of luxury, precision, and mechanical complexity. Crafted by Abraham-Louis Breguet, the legendary Swiss watchmaker, it would take over 44 years to complete, long after Marie Antoinette’s tragic execution and Breguet’s death. Marie Antoinette was an Austrian princess and the wife of King Louis XVI. Born on the 2nd November 1755 in Vienna, Austria, she was the 15th child of Empress Maria Theresa of Austria and Emperor Francis I, Holy Roman Emperor. She grew up in the lavish Schönbrunn Palace centre of the court of Vienna, surrounded by wealth, music, and political intrigue. Marie Antoinette with a Rose. Elisabeth Louise Vigée Le Brun, 1783. Oil on Canvas. Image courtesy of The Metropolitan Museum of Art The Palace of Versailles was a major site of scientific thinking in the 17th and 18th centuries. It hos...

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Zenith x Kari Voutilainen x Phillips Calibre 135 Observatoire: 10 of the World’s Highest Precision, Competition-Winning Chronometer Movements Ready for the Wrist – Reprise Quill & Pad
Zenith x Kari Voutilainen x Sep 2, 2023

Zenith x Kari Voutilainen x Phillips Calibre 135 Observatoire: 10 of the World’s Highest Precision, Competition-Winning Chronometer Movements Ready for the Wrist – Reprise

After seven decades carefully stored away in the Zenith archives, ten of the original chronometry competition-winning movements find their way into a limited set of new watches thanks to Phillips, legendary independent watchmaker Kari Voutilainen, and Zenith's current management.

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Barbier-Mueller Returns with the Mosaïque II SJX Watches
F.P. Journe Chronomètre Souverain movement – Jun 29, 2023

Barbier-Mueller Returns with the Mosaïque II

In 2017, the original Barbier-Mueller Mosaïque made its first public appearance at Only Watch. The collaborative efforts of longtime friends Stéphane Barbier-Mueller and François-Paul Journe, one being the preeminent independent watchmaker and the other a member of one of a Swiss real estate dynasty, this was an unexpected and rather pleasant surprise. Now, the pair have returned with the Mosaïque II, follow up to their initial offering, sticking to the same principles as before, but with the eye of watch designer Eric Giroud.  Initial thoughts Those who are fans of the original will be pleased to see all of the main traits have been carried over to this latest version. The stone work on the dial, case and hinged caseback is all there, and the two hander runs on the F.P. Journe Chronomètre Souverain movement – in fact, it is essentially an elaborately inlaid Chronomètre Souverain. If anything, they have elevated their previous efforts by incorporating more types of semi-precious stones in order to execute Mr. Giroud’s design. While Mr Giroud’s eye has given the Mosaïque II a different feel from its predecessor, the new watch still reflects Mr Barbier-Mueller’s interest in arts and culture, which was the basis for the original Mosaïque. Besides being a shareholder in F.P. Journe, Mr Barbier-Mueller is also a member of the family that established the Barbier-Mueller Museum in Geneva that’s famous for its world-class collection of tribal art. The original M...

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Insight: Daniels’ Co-Axial Escapement, an Evolution of the Fasoldt Chronometer SJX Watches
Omega Feb 21, 2023

Insight: Daniels’ Co-Axial Escapement, an Evolution of the Fasoldt Chronometer

In the quest for precision chronometry in a mechanical watch, perhaps no other component is as crucial as the escapement – often consisting of an escape wheel and lever that engage with the oscillating organ. The history of watchmaking recounts many an attempt at inventing a better-performing escapement, with some attempts naturally more successful than others. By the 20th century, the watch industry had settled upon the Swiss lever escapement, which has proven itself to be a reasonably solid performer and crucially, one fit for mass production. However, in the latter decades of the century, one English watchmaker attempted to challenge the industry status quo. In 1974, George Daniels invented the “co-axial escapement”, a seemingly novel and practical escapement of his own design that was conceived as an functionally superior alternative to the Swiss lever escapement. Daniels’ invention fulfilled his ambition, at least in part, when it was sold to Omega and then successfully industrialised starting in 1999; today it is found in hundreds of thousands of movements that Omega produces each year. The latest iteration of the Omega Speedmaster Moonwatch is kitted out with the co-axial escapement With the merits of the co-axial escapement having been proven in part by its large-scale adoption, my aim here is not to examine its intrinsic qualities, but rather delve into its development. Specifically I will explore the fact that the co-axial escapement might not be an ent...

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INTRODUCING: The Jaeger-LeCoultre Polaris Mariner Memovox is an alarmingly different type of Polaris Time+Tide
Jaeger-LeCoultre Polaris Mariner Memovox Oct 1, 2020

INTRODUCING: The Jaeger-LeCoultre Polaris Mariner Memovox is an alarmingly different type of Polaris

Although it’s never really taken off as an uber-popular complication like a chronograph or moonphase, the alarm function of JLC’s Memovox watches has, since they were first unveiled in 1968, been exceedingly practical. But it’s a complication that’s usually been found in the watchmaker’s daintier, and perhaps less practical, dress watches. This has meant that … ContinuedThe post INTRODUCING: The Jaeger-LeCoultre Polaris Mariner Memovox is an alarmingly different type of Polaris appeared first on Time+Tide Watches.

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INTRODUCING: The Jaeger-LeCoultre Polaris Mariner Date, is a bolder, more confident move for the Polaris Time+Tide
Jaeger-LeCoultre Polaris Mariner Date Sep 30, 2020

INTRODUCING: The Jaeger-LeCoultre Polaris Mariner Date, is a bolder, more confident move for the Polaris

Jaeger-LeCoultre is widely regarded as making some of the finest dress watches on the market. But for those not familiar with the Le Sentier firm’s full collection, JLC also makes a very good stainless steel sports watch – the Polaris. And now the legacy watchmaker has decided to up the ante with the Polaris, broadening … ContinuedThe post INTRODUCING: The Jaeger-LeCoultre Polaris Mariner Date, is a bolder, more confident move for the Polaris appeared first on Time+Tide Watches.

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You Are There: Visiting The L.A. Mayer Museum For Islamic Art In Jerusalem, Home Of The Breguet No. 160 ‘Marie Antoinette’ Quill & Pad
Breguet No 160 ‘Marie Antoinette’ May 30, 2020

You Are There: Visiting The L.A. Mayer Museum For Islamic Art In Jerusalem, Home Of The Breguet No. 160 ‘Marie Antoinette’

When Bhanu Chropra visited Israel on a business trip in 2019, a colleague suggested a short visit to see the historically important sites in Jerusalem, and knowing his passion for horology said that he had a special surprise for him: visiting the L.A. Mayer Museum for Islamic Art. The museum holds one of the world’s most horologically significant pocket watch, clock, and automaton collections, and the star of the show is Breguet No. 160, aka “the Marie Antoinette.”

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First Look – The New Brellum Pandial Power Reserve Chronometer LE, a Greatest-Hits of the Brand’s Catalogue Monochrome
Oct 31, 2025

First Look – The New Brellum Pandial Power Reserve Chronometer LE, a Greatest-Hits of the Brand’s Catalogue

Independent and intentionally small, Brellum is the brand of fourth-generation watchmaker Sébastien Muller, and is built on three constants: COSC certification across the board, full movement decoration under a domed exhibition back, and direct-to-consumer production capped at 299 pieces a year. The catalogue splits into clear families. The Duobox, with its twin box sapphires and […]

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The Batavi Marine Chronograaf Conjures the Scent of Summer Worn & Wound
Jul 14, 2025

The Batavi Marine Chronograaf Conjures the Scent of Summer

As someone who lives within a mile of the Pacific Ocean, the smell of the sea is one of comfort to me. Naturally, this leads me to like candles and fragrances that have a hint of that crisp aquatic breeze. Of course, this has little to do with watches; or at least I thought it did. But Amsterdam-based microbrand Batavi has launched a yacht-inspired fragrance and wristwatch pairing that evokes the ocean in all its aesthetic and olfactory glory, so you can bring that sweet, salty scent with you in more ways than one.  The Marina Chronograaf lineup introduces four variants, each with identical specs but relatively singular designs. To start, each Chronograaf measures in at 46mm lug-to-lug, and a 38mm stainless steel case with 13.5mm of thickness conveys a sporty silhouette. Each model features two subdials, a running seconds and a 30-minute counter at the 9 and 3 o’clock positions respectively, a railroad track around the dial, and hands that lay somewhere between GMT, chronograph, and diver styling. Inside, a hand-wound Seagull ST1901 movement keeps the yacht-timer functionality of each reference ticking and promises a 45-50 hour power reserve. Fifty meters of water resistance, a domed sapphire crystal, see-through caseback, and stainless steel quick-release bracelet round out the package. Four dial options are available, and each colorway is about as distinct from the next as is possible. “Sunrise” features a cotton candy-esque combination of blue and pink, with a gr...

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Introducing – Omega Launches The Seamaster Aqua Terra 30mm Collection with New Master Chronometer Movements Monochrome
Omega Launches Jun 19, 2025

Introducing – Omega Launches The Seamaster Aqua Terra 30mm Collection with New Master Chronometer Movements

Omega releases a new sub-collection of its Seamaster Aqua Terra in 30mm cases with metal bracelets spread across 12 references. A classic all-rounder, the 30mm Aqua Terra models are powered by two new in-house automatic movements. Designed to fit the smaller case size, calibre 8750 and 8751 are the smallest and slimmest co-axial Master Chronometers […]

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Introducing – The New Serica 5303 PLD “Plongeur Démineur” Dive Chronometer Monochrome
Serica 5303 PLD “Plongeur Démineur” May 15, 2025

Introducing – The New Serica 5303 PLD “Plongeur Démineur” Dive Chronometer

Serica began its journey with a classic field watch, and since its launch in 2019, the young brand has quickly carved out a strong identity with a lineup of retro-inspired, adventure-ready timepieces, spanning field, dive, and GMT models, and something else a bit dressier. Designed with durability, precision, and style in mind, every Serica watch […]

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First Look – The Brellum Pandial Bicompax Black DLC Ti Chronometer, With a new Movement Inside Monochrome
Nov 29, 2024

First Look – The Brellum Pandial Bicompax Black DLC Ti Chronometer, With a new Movement Inside

A relatively young and independently-ran brand, Brellum specializes in sporty chronographs, all produced in limited editions, with a maximum capacity of only 299 units per year and exclusively direct sales to final customers. A deliberate choice that’s made the brand an enthusiast-driven project with a strong base. Following the refreshing Duobox 39mm a couple of […]

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First Look – A US Army Commissioned Wristwatch Gets a Remake as the Titoni Airmaster Pilot Chronometer Monochrome
Nov 28, 2024

First Look – A US Army Commissioned Wristwatch Gets a Remake as the Titoni Airmaster Pilot Chronometer

Titoni is an independent family-owned watch brand founded in 1919 by Fritz Schluep in Grenchen, Switzerland, now in the hands of great-grandsons Marc and Olivier Schluep. With a variety of contemporary collections and even an in-house automatic powering its Line 1919 dress watch collection, the genuine interest in this brand resides in its remakes of […]

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Hands-On: the Buser Fréres Marine 38 Worn & Wound
Nov 21, 2024

Hands-On: the Buser Fréres Marine 38

Whenever a new brand pops up I’m always intrigued. And while I’ve got nothing against a good ol’ dive or field watch, my interest is always piqued if it’s something with a more classic vibe. Especially if there’s some real watchmaking pedigree involved.  Buser Fréres is a newly revived brand originally dating back all the way to 1892. It survived the quartz crisis but initially seized all activities in the year 2000. Twenty-three years later German brand Dekla – who’s been designing and manufacturing watches under their own name for 10 years – revived the brand and launched the first models earlier this year. I’ve been a happy Dekla owner for the last 4 years, so naturally I was thrilled to see the line expanded with the Buser Fréres brand.  While some would rush to categorize Buser Fréres as a micro brand – and nothing wrong with that in particular – I’d just like to point out a couple of facts before we do just that. When I hear the term “micro brand” I tend to associate it with outsourced components brought together into a final product. Once again I’d like to stress: nothing wrong with that. But Buser Fréres offers something of a different recipe as they produce almost everything but the movement themselves.  For 10 years Dekla has been making watch dials, cases and hands in a wide array of materials, sizes and configurations, and that’s what sets Buser Fréres apart from many others in the space – and price bracket. From Grand ...

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First Look – The New Yema x Alain Silberstein Marine Watch Monochrome
Yema Oct 11, 2024

First Look – The New Yema x Alain Silberstein Marine Watch

If you’re following MONOCHROME, you might have witnessed the rather impressive rise of Yema, moving from a brand making nice, accessible vintage re-editions to now a strong advocate of French watchmaking, developing its own movements. For its latest creation, the Jura-based watchmaker is teaming up with renowned designer Alain Silberstein, bringing this new limited edition […]

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Owner's Review: The Serica 5303-3 COSC Diving Chronometer Is Parisian Teddy Baldassarre
Serica Oct 4, 2024

Owner's Review: The Serica 5303-3 COSC Diving Chronometer Is Parisian

Picture the scene: a hectic work week ends with a quick bite at your favorite Italian trattoria, then you hustle a few blocks afterwards to a dimly lit West Village jazz club to catch a blazing first set from the house band. Glancing down at your wrist, you see you have just enough time to cab it to the airport for the redeye to Paris for a well-deserved long weekend, beachfront on the Côte d'Azur. But the watch on your wrist isn’t a vintage Rolex GMT-Master or Omega Seamaster 300, although either would be a fine choice to segue from the office to the French Riviera without missing a beat. No, your timepiece is from Serica, a microbrand based in France with enough Continental cool and midcentury charm to appear as if it just popped out of a time capsule from 1962. If ever a modern sports watch evoked the Mad Men era, this is it. Even though it’s only been in existence since 2019, Serica doesn't feel like a typical microbrand. In fact, it has the aura of an established horological icon, one with its own storied history and visual language. And if it’s not readily apparent, I’m positively obsessed with the entire Serica aesthetic.  Serica's French-designed, Swiss-made creations blend the refinement of classic Parisian fashion with the urbane cool of a European matinee idol. The company’s debut release was the W.W.W field watch, followed by the 5303 diver that made its bow in 2021, in both black and white-dialed variants. A new colorway was offered the followin...

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Introducing – Hajime Asaoka Revives Extinct Japanese Brand Takano and Presents the Chateau Nouvelle Chronometer Monochrome
Casio ns but Jul 25, 2024

Introducing – Hajime Asaoka Revives Extinct Japanese Brand Takano and Presents the Chateau Nouvelle Chronometer

We’ve said it on multiple occasions but the world of watches isn’t limited to Switzerland, or to an extent, to Europe. There are fascinating watchmakers all over the globe, and Japan is one of the most prolific countries when it comes to independent watchmaking. One of them is Hajime Asaoka, not only the man behind […]

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