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Results for The Longitude Problem

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The Longitude Problem

The 200-year navigation crisis solved by John Harrison\'s H4 marine chronometer (1759); the lineage to modern COSC and Master Chronometer.

The evolution of Jay-Z’s watch collection: 99 problems but a bare wrist ain’t one Time+Tide
Nov 13, 2021

The evolution of Jay-Z’s watch collection: 99 problems but a bare wrist ain’t one

Most of us have a dream of making it big. Even when such heights seem impossible, seeing that achievement in others provides the extra boost you need to keep striving for your own goals. Which is how I felt watching Jay-Z get inducted into the Rock and Roll Hall of Fame. I happily watched his … ContinuedThe post The evolution of Jay-Z’s watch collection: 99 problems but a bare wrist ain’t one appeared first on Time+Tide Watches.

Watches, Stories, & Gear: Mechanical Keyboards, the Werwulf Trailer, and a Stunning New View of the Milky Way Worn & Wound
Jul 4, 2026

Watches, Stories, & Gear: Mechanical Keyboards, the Werwulf Trailer, and a Stunning New View of the Milky Way

“Watches, Stories, and Gear” is a roundup of our favorite content, watch or otherwise, from around the internet. Here, we support other creators, explore interesting content that inspires us, and put a spotlight on causes we believe in. Oh, and any gear we happen to be digging on this week. We love gear. Fixing the Biggest Problem With Mechanical Keyboards I don’t think it would be fair to classify me as a luddite, but I would say I’m more of a nostalgist. While I have made a nice little career for myself online, I do miss when things were a bit simpler. You know, when tech oligarchs didn’t rule the world and I could play my little Flash games on Neopets and it would take four hours to download one song onto my Microsoft Zune. Sure, I have an office now, but it doesn’t have the same charm as a computer room.  This, of course, is bootstrapped by the physical memories, too. The soft grey ball inside the computer mouse, for one. Turning the computer on with my big toe while balancing my dinner plate on my lap. And, of course, the clickity-clackity of the keyboard. It was elevator music to the millions of AOL messages I sent throughout my high school years and the bane of my father’s existence, who swore he could hear it from all the way down the hall. Now I use a Macbook and it’s a soft and gentle tap on my fingertips. Not to quote Joni Mitchell here, but you really don’t know what you got ‘til it’s gone. All the same, I’m glad I’m not alone. It see...

First Look - Breguet Releases 3 new Tourbillon Watches for the 225th Anniversary of its Invention Monochrome
Breguet Releases 3 new Tourbillon Jun 26, 2026

First Look - Breguet Releases 3 new Tourbillon Watches for the 225th Anniversary of its Invention

Precisely 225 years ago on this day (on June 26, 1801, or on 7 Messidor An IX, to use the French Republican calendar in force at the time), Abraham-Louis Breguet was granted the patent for what is, without a doubt, its most famous invention: the tourbillon. Designed to counter the problem of gravity affecting the […]

Vacheron Constantin Brings Back the Traditionelle Twin Beat Perpetual Calendar Worn & Wound
Vacheron Constantin Brings Back Jun 17, 2026

Vacheron Constantin Brings Back the Traditionelle Twin Beat Perpetual Calendar

What is the ultimate first world problem? I can think of a handful. There’s the classic notion that we just have too much content to scroll through, stream, and consume. As the Boss put it, there’s 57 channels and nothin’ on. As I sit here typing up this article on hot early summer day with my AC blasting, I’m realizing it’s getting cold enough in here that I might need to add a layer. Woe is me! Just a few weeks ago, I bought a new iPhone and quickly found that Apple Music hadn’t automatically moved over all of my locally downloaded tunes during the initial data transfer. I was pretty disappointed when I realized only the second half of Turn on the Bright Lights was available to me on a late night drive home over the weekend. I just want to hear “Obstacle 1”! These are all annoyances, for sure. But none of them truly compare to the King of First World Problems, which is very obviously not being able to keep your perpetual calendar sufficiently wound. I mean, have you tried to reset one of these things recently? It can be really frustrating. Plenty of brands, like IWC earlier this year, have made moves to make their perpetual calendar movements more forgiving when resetting. Gone are the days, hopefully, when jumping past the current year means an expensive trip back to the manufacture in Switzerland.  Vacheron Constantin has a slightly different solution, which is to enable your perpetual calendar to remain wound for weeks at a time by allowing the wearer...

Introducing: The Vacheron Constantin Traditionelle Twin Beat Perpetual Calendar Is Back Hodinkee
Vacheron Constantin Traditionelle Twin Beat Perpetual Jun 16, 2026

Introducing: The Vacheron Constantin Traditionelle Twin Beat Perpetual Calendar Is Back

What We Know Vacheron just brought back its incredibly unique Traditionelle Twin Beat Perpetual Calendar, and it's a welcome sight for dedicated collectors of the brand, along with general enthusiasts of unexpected yet innovative takes on complicated watchmaking. If you're not familiar with the original Traditionelle Twin Beat Perpetual Calendar, launched back in 2019, the watch offered an incredibly novel solution to a problem often found within perpetual calendar watches. Let's be honest, though the entire appeal and genius of the perpetual calendar is for someone wearing one watch all day, every day, for the whole year, watches like these are most often owned by those with a large collection to begin with. A weekend for a perpetual calendar in a watch box or drawer would mean that the complication would need to be set again after winding, and so Vacheron introduced this perpetual calendar with a whopping 65-day power reserve. To achieve this, rather than putting in an unfeasibly large mainspring in the barrel, the Traditionelle Twin Beat Perpetual Calendar lives up to its name by offering a new system that allows for switching between two beat rates for the watch—a contemporary high-beat 5Hz frequency with a 4-day power reserve for normal timekeeping during wear, but a much slower 1.2Hz mode with that prolonged power reserve for the "Standby" phase. The Caliber 3610QP comprises two separate gear trains for the two regulating systems, with a series of differentials tha...

The Rivanera Gets Echo/Neutralized By Seconde/Seconde/ Fratello
May 1, 2026

The Rivanera Gets Echo/Neutralized By Seconde/Seconde/

It’s always fun to see a seconde/seconde/ take on a popular watch. With the many whimsical releases Romaric André created while collaborating with brands, you sometimes wonder whether he is ever short of good ideas. So far, though, that hasn’t been a problem. If anything, I have seen the releases become better over time. The […] Visit The Rivanera Gets Echo/Neutralized By Seconde/Seconde/ to read the full article.

Hands-On With The Vostra Vector: A Retro-Futuristic Chronograph That’s Built To Be Worn Fratello
Jan 18, 2026

Hands-On With The Vostra Vector: A Retro-Futuristic Chronograph That’s Built To Be Worn

There’s a certain kind of satisfaction that only a chronograph can offer - the tactile click of the pushers, the sweep of the seconds hand, the quiet excuse to time things that probably do not need timing at all. You know exactly what I mean; we all do it. The problem is that many chronographs […] Visit Hands-On With The Vostra Vector: A Retro-Futuristic Chronograph That’s Built To Be Worn to read the full article.

First Look - The Green Bovet Récital 30 Worldtimer Seddiqi Limited Edition Monochrome
Bovet Nov 19, 2025

First Look - The Green Bovet Récital 30 Worldtimer Seddiqi Limited Edition

Bovet‘s Récital line has always been where Pascal Raffy lets invention roam free: oversized domes, theatrical displays and genuinely mindblowing complications. The Récital 30 continues that tradition while making a pragmatic, travel-ready turn. Launched as a scaled-down, wearable sibling to the Récital 28, the Récital 30 focuses on one problem and solves it elegantly with […]

I Found My Ultimate Dive Watch: The Rolex Sea-Dweller 16600 Fratello
Rolex Sea-Dweller 16600 Rolex has Sep 14, 2025

I Found My Ultimate Dive Watch: The Rolex Sea-Dweller 16600

Rolex has always produced watches that I have gravitated towards. For a long time, though, I grappled with some of the modern baggage that the brand has taken on. Modern Rolex sports watches have a certain bling factor that turns me off. The problem is that vintage Rolex watches are either unobtainable or, if I […] Visit I Found My Ultimate Dive Watch: The Rolex Sea-Dweller 16600 to read the full article.

Introducing - The Arnold & Son Globetrotter 42 Steel in Strand Blue & Greenwich Green Monochrome
Arnold & Son Jul 16, 2025

Introducing - The Arnold & Son Globetrotter 42 Steel in Strand Blue & Greenwich Green

John Arnold’s marine chronometers were vital tools for calculating longitude at sea, trusted by explorers like Captain James Cook and used by the East India Company’s fleets. This pioneering spirit lives on in the modern Arnold & Son’s Globetrotter line, showcasing the brand’s distinctive approach to functional, finely crafted world timers. Earlier references are available […]

Introducing - The Arnold & Son Perpetual Moon 41.5 Red Gold Cliff Grey Edition Monochrome
Arnold & Son Jun 27, 2025

Introducing - The Arnold & Son Perpetual Moon 41.5 Red Gold Cliff Grey Edition

Swiss watchmaker Arnold & Son is named after the 18th-century English watchmaker John Arnold, the ingenious inventor who popularised the expression ‘chronometer’ to describe his precision marine timekeepers. Before the advent of marine chronometers to determine longitude at sea, navigators relied on the position of the Sun, Moon and stars to determine their position. Astronomy, […]

Hands-On With The New Gold-Plated Forstner Bracelets Fratello
Jun 3, 2025

Hands-On With The New Gold-Plated Forstner Bracelets

As a die-hard collector of vintage watches, I’ve grown to appreciate the right accessories to pair with my treasured pieces. Straps are a great option, and we’ve devoted plenty of articles to reviewing them. However, an appropriate bracelet is the chef’s kiss. The problem is that authentic bracelets are difficult to find and are often […] Visit Hands-On With The New Gold-Plated Forstner Bracelets to read the full article.

First Look - The Incredibly Light Ulysse Nardin Diver (Air) Monochrome
Ulysse Nardin Diver Air Switzerland might Apr 2, 2025

First Look - The Incredibly Light Ulysse Nardin Diver (Air)

Switzerland might be landlocked, but Ulysse Nardin, a young watchmaker from Le Locle, consolidated his reputation by producing precision marine chronometers. By the 1870s, the manufacture supplied more than 50 navies and merchant marine companies with chronometers to calculate longitude at sea. These days, Ulysse Nardin plays on its marine heritage with its classical Marine […]

Larcum Kendall and K1: The Greatest Watchmaker and Watch You Have (Probably) Never Heard Of Quill & Pad
Nov 21, 2024

Larcum Kendall and K1: The Greatest Watchmaker and Watch You Have (Probably) Never Heard Of

You may have heard of a few or more of the following historical people and events: Thomas Mudge, George Graham, John Harrison, the Longitude Prize, Captain James Cook, and the mutiny on the 'HMS Bounty.' However, you are less likely to have heard the name of a horologist who played a pivotal role in all of the above: Larcum Kendall (1719–1790). Come with me on a worldwide adventure involving timekeeping and history.

Introducing: The Third-Generation Studio Underd0g 01Series - ­­A New And Improved Breed Fratello
Studio Underd0g Nov 18, 2024

Introducing: The Third-Generation Studio Underd0g 01Series - ­­A New And Improved Breed

Do you want to use a Seagull ST-1901 movement in your new watch? Sure, that’s no problem, but you’ll need to order a minimum of 10,000 units. That’s something you want to hear as a small brand when asking the Chinese movement manufacturer about possibly supplying you with calibers. But instead of looking for possible […] Visit Introducing: The Third-Generation Studio Underd0g 01Series - ­­A New And Improved Breed to read the full article.

Hands-On: The Glashütte Original Senator Chronometer Fratello
Glashütte Original Senator Chronometer Sep 27, 2024

Hands-On: The Glashütte Original Senator Chronometer

At one time, the marine chronometer was among the most important of all instruments. It helped determine a ship’s position by measuring longitude. Glashütte Original, originally known as Glashütter Uhrenbetrieb GmbH (GUB), was a famed maker of these instruments. The Senator Chronometer takes inspiration from these ship clocks but transports the form to the wrist. […] Visit Hands-On: The Glashütte Original Senator Chronometer to read the full article.

Fratello Favorites: The Best Watches Under €10K - Thor’s Picks From Cartier, Grand Seiko, And Zenith Fratello
Grand Seiko Aug 28, 2024

Fratello Favorites: The Best Watches Under €10K - Thor’s Picks From Cartier, Grand Seiko, And Zenith

Well, that is what I wrote when I started this story, genuinely believing that I would have a problem choosing. But as many times before, RJ, Mike, and others have finished their Best Watches Under €10K stories and stolen my chosen thunder. The €5K–10K segment is not easy for me as my taste annoyingly tends […] Visit Fratello Favorites: The Best Watches Under €10K - Thor’s Picks From Cartier, Grand Seiko, And Zenith to read the full article.

Roundup: The Panels of Windup Watch Fair Chicago Worn & Wound
Brew There are several tried-and-true Aug 13, 2024

Roundup: The Panels of Windup Watch Fair Chicago

One of the highlights of the Windup Watch Fair in Chicago last month was the plethora of amazing panels that took place throughout all three days of the event. Between our kick-off event with our friends at CD Peacock and a stellar panel and podcasting room at Venue West, we had no problem creating the kind of content that we’re fond of making here at Worn & Wound. Fortunately, we had a slew of incredible industry professionals on site to glean some great insights as well! Here’s a roundup of panels from the show. Kick-off Event at CD Peacock The festivities began with a kickoff party on the Thursday night before the show with our friends at CD Peacock. They were kind enough to open the doors and extend the hours of their stunning new retail environment located at the Oakbrook Center in Oakbrook, IL. Vice Chairman, Steven Holtzman joined Worn & Wound’s Co-founder Zach Weiss and Managing Editor, Zach Kazan for an in-depth discussion focused on watchmaking, the watch market landscape, and the importance of independent and niche brands in the marketplace. Rewriting the Design Language of Watches with Brew There are several tried-and-true watch designs that companies-new and old-draw from. This classic design language relies on very small alterations and nuances over time. The belief often is, do what sells. This panel, moderated by Zach Kazan, Managing Editor at Worn & Wound, featuring Jonathan Ferrer, Designer & Founder at Brew; Bradley Price, Owner at Autodromo; a...

The Ressence Type 5 Diver Gets the Full Lume Treatment SJX Watches
Ressence Type 5 Diver Gets Jul 3, 2024

The Ressence Type 5 Diver Gets the Full Lume Treatment

Ressence has gently tweaked its flagship model to create the Type 5 L. Already unconventional in its original form, the new Type 5 is similar in style and function to the original but with a fully luminous dial that maximises legibility in the dark. As is tradition for the brand’s higher-end offerings, the Type 5 L features an oil-filled case that enhances visibility of the dial by eliminating a common problem underwater: refraction. Initial thoughts Dive watches rarely deviate from orthodoxy, exemplified by the Rolex Submariner. But then there is Ressence, which is unorthodox across all its watches, but in a sensible and thoughtful manner. The Type 5 L underwater The Type 5 L meets the ISO 6425 standard for a dive watch, but looks nothing like a typical dive watch. Even though the planetary sub-dials take some getting used to, legibility is good once you’re familiar with the dial layout. And the addition of lume enhances visibility, making this a logical evolution of the model. As is often the case with most of the brand’s top-end offerings, the only downside is the price of CHF34,500. Granted, the Type 5 L is unique in construction and form, and also executed to a high level of quality – but it is still pricey. The entire dial of the timepiece is luminous for legibility in dim light Oil-filled dial In terms of dimensions and materials, the Type 5 L is identical to its less luminous counterpart. The case is titanium, measuring 46 mm in diameter and 15.5 mm high....

Explained: Bovet Solves Daylight Savings Time in the Wristwatch SJX Watches
Bovet Apr 26, 2024

Explained: Bovet Solves Daylight Savings Time in the Wristwatch

The Bovet Récital 28 Prowess 1 is an ingenious solution to an age-old problem: accounting for daylight saving time (also known as summer time) in a multi-timezone wristwatch. Despite the seemingly simple nature of the problem, the solution is extraordinarily complicated, requiring two dozen rollers and many more gears and springs. With its roller-based world time mechanism, the Récital 28 can easily switch between showing summer or winter in both Europe and America, making the first-ever wristwatch able to do that. Initial thoughts Bovet’s complicated watches are usually enormous, intricately mechanical, and sometimes extravagantly decorated, sometimes sporting pearls, diamonds, and enamel work. The Récital 28 is less decorative but intensely mechanical. With clever engineering, the calibre inside addresses one of the longstanding challenges of a travel-time watch, accounting for daylight saving time (DST). The cleverness of the Récital 28 lies in its rollers, which each have four positions. This allows time zones to be easily backwards or forwards in accordance with DST. Even though the solution is straightforward in principle, executing it is immensely complex. In order to accommodate its many functions, the R28-70-00X movement incorporates multiple subassemblies that make it a unique proposition. As a result, the movement in the Récital 28 is unusually complicated, especially for what is essentially a world time watch. Its part-count of 744 puts it in grand comp...

Watch Lume 101: The Complete History and Primer on Reading Time in the Teddy Baldassarre
Mar 21, 2024

Watch Lume 101: The Complete History and Primer on Reading Time in the

Luminous material on watch dials - referred to in shorthand as “lume” by both industry insiders and avid enthusiasts - is an element taken for granted nowadays. It can be said without hyperbole that a watch dial without lume is a stylistic outlier in this modern era, but this wasn’t always the case. Discerning the time in the dark presented a major problem for watchmakers in the early days before the widespread use of electricity in homes, and at first the only solution that could be offered was an audible rather than visual one: watches that chimed the time on demand, like minute repeaters and sonneries. Only a handful of wealthy individuals could afford these highly complicated timepieces, however, so a more widely accessible technology was needed as wristwatches spread to the general populace. Around the dawn of the 20th Century, watchmakers turned their attention to making watch dials that could be read in the dark, paving the way for the luminous materials that are still used commonly today. The road to perfecting the technology, however, would not be easy, and at times would even be dangerous. Radium The first material applied to watch dials for nighttime luminescence was a paint made from radium with zinc sulfide, which, thanks to radium’s half-life of 1,600 years, offered a long-lasting glow during that period before dimming - the catch being that radium, as its name implies, is radioactive. One of its earliest uses can be traced to a pioneer of devel...