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Wiki · Guide
Quartz Crisis

1969-1985 industry collapse triggered by the Seiko Astron. Cost Swiss watchmaking two-thirds of its workforce; rebounded via Swatch Group consolidation and Biver's Blancpain.

Wiki · Guide
The Quartz Astron Launch Seiko

Christmas Day 1969: Seiko launches the world\'s first quartz wristwatch and detonates the Swiss watch industry.

Exclusive · Guide
Seiko 5 Sports Honda Motocompo Limited Edition: Scooter Yellow in 36.4mm

Eight thousand pieces. One very specific shade of yellow. Seiko and Honda celebrate the Motocompo's 45th anniversary with a watch that's hard to ignore.

Exclusive · Guide
Limited Edition Seiko Turtle HBB002: PADI's 60th in Sunburst Blue

Seiko's Prospex Turtle HBB002 marks PADI's 60th anniversary. Electric sunburst blue dial, ceramic bezel insert, 200m water resistance, an 8,000-piece run, and a €750 price tag that puts it squarely in the impulse-buy bracket for a real diver.

Introducing: The Seiko Presage Classic Series “Shiracha” SPB529 - Like Slipping On A Loafer Fratello
Seiko Presage Classic Series “Shiracha” Sep 8, 2025

Introducing: The Seiko Presage Classic Series “Shiracha” SPB529 - Like Slipping On A Loafer

Upcycling, the process of transforming materials that would otherwise be discarded into new products of higher value through thoughtful design and creativity, is a current theme, and that’s a good thing. You’ll get my point by looking at the new Seiko Presage Classic Series “Shiracha” SPB529. The elegant 40.2mm watch features a strap made of […] Visit Introducing: The Seiko Presage Classic Series “Shiracha” SPB529 - Like Slipping On A Loafer to read the full article.

Watches, Stories, and Gear: Peter McKinnon’s EDC, A Revived Prelude, and New Watches from Citizen and Seiko Worn & Wound
Citizen Sep 6, 2025

Watches, Stories, and Gear: Peter McKinnon’s EDC, A Revived Prelude, and New Watches from Citizen and Seiko

“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.   An EDC update from Peter McKinnon When it comes to blending Every Day Carry, photography, and story telling, few people manage to do it like Peter McKinnon does.  Over the years, Peter has grown his youtube channel to almost 6 million subscribers, while pulling back the curtain on his creative process and offering useful tips and tricks along the way. In his most recent video, Peter goes through his EDC as we head into fall. One of the most interesting items Peter talks about is his watch, a Marathon GSAR (Ref. WW194006SS-0130). Long time fans of the channel will likely have heard Peter mention watches before, but this is one of the first times that we’ve seen Peter dive into the specs and speak about how and why a certain watch made its way onto his wrist.  Check out the video above for his full reasoning! The New Citizen Tsuyosa 60 When the Citizen Tsuyosa debuted in 2023, Zach Kazan was quick to state that “Citizen is making a play at the competitive “sporty, everyday casual” segment of the market with a colorful integrated bracelet option.” Now, almost two years later, the Tsuyosa line has rapidly grown to include numerous colorways, two case sizes, ...

Watches, Stories, and Gear: The Jot N Pop, Stirling Timepiece’s Jarvis GMT, and The Return of Iconic Designs From Tom Bihn and Giant Mouse Worn & Wound
Seiko Aug 30, 2025

Watches, Stories, and Gear: The Jot N Pop, Stirling Timepiece’s Jarvis GMT, and The Return of Iconic Designs From Tom Bihn and Giant Mouse

“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. This week’s Watches, Stories and Gear is sponsored by Stirling Timepieces. Check out the new Jarvis Diver GMT and a link to their website below. Notorious EDC and Big Idea Design Create the Jot N Pop Photo courtesy of Dave Svarte These days, collaboration is the name of the game. Whether it’s teaming up with a famous soda brand (looking at you Seiko and Jack Mason), or two EDC powerhouse brands creating something entirely different. When our team was at Blade Show this year, we got a sneak peak of the first Jot N Pop prototype and knew it was going to be something special.  According to Tom Medovich, “The Jot N’ Pop is what happens when you mash up Big Idea Design’s Pocket Pro with the Beer Bomb. A titanium pen that’s built to do whatever you throw at it, as long as whatever you throw at it is writing stuff down or opening bottles.”  Regardless of how they came up with this idea, we can’t think of a more perfect tool for staying hydrated and taking notes! Built upon the design of the Pocket Pro, the new Jot N Pop is entirely machined from Grade 5 titanium (no plastic parts!), with a pocket clip made from grade 4 Ti for spring tension. Arguably the mos...

Seiko vs. Citizen: Comparing the Icons of Japanese Watchmaking Teddy Baldassarre
Citizen Comparing Aug 28, 2025

Seiko vs. Citizen: Comparing the Icons of Japanese Watchmaking

Seiko and Citizen are the two undisputed titans among Japanese watch brands, known and admired worldwide for their technical excellence, design acumen, and legendary price-to-value ratio, not to mention the role that both brands have played in the technological and cultural evolution of watchmaking in general. And while these world-renowned companies have been fierce competitors from the beginning, they have a lot in common as well. Here we present a side-by-side comparison of Seiko vs. Citizen, starting with their earliest days and concluding with an overview of what each brand is doing today.  Seiko vs. Citizen: Origins of Two Japanese Watch Pioneers With its very high-tech lineup and avant-garde designs, one might be inclined to think Citizen Watch Company is a relatively new player on the worldwide watch scene, but one would be mistaken. The company today known as Citizen was founded in 1918 by Kamakechi Yamazaki as the Shokosha Watch Research Institute. The name “Citizen” first appeared on the dial of a pocket watch that Shokosha produced in 1924; it is believed to have been suggested by Yamazaki’s close friend Shinpei Goto, then the mayor of Tokyo, who believed such a watch should be universally appealing and accessible to all “citizens” of Japan.  Shokosha merged with the Schmid company, a Japan-based manufacturing firm founded by expatriate Swiss watchmaker Rodolphe Schmid, in 1930 to become Citizen. Joining the expertise of Shokosha’s Japanese watchm...

King Seiko SPB389 Review Teddy Baldassarre
Grand Seiko but…what exactly Aug 22, 2025

King Seiko SPB389 Review

Everyone knows about Seiko and Grand Seiko, but…what exactly is King Seiko? Well, King Seiko is one of those cult-classic throwbacks that dodges easy categorization or market segmentation. The 1960s elegance and sheer retro vibes exuded by this collection is charming and a little quirky in a world where big brother Grand Seiko has reached downright mainstream status. In 2021, the King Seiko KSK SJE083 resurrected the historic KSK model and the collection has slowly grown since then under the Seiko Luxe collection of higher-end offerings. Here we see the Seiko SPB389, which is a mid-century-inspired watch that will appeal to the kind of person who loves being early to a trend. Seiko Luxe Explained First off I wanted to address the Seiko Luxe collection, because I know not everyone is up to date with the tiers of Seiko. Where standard Seiko is your more classic, accessible fare, the Seiko Luxe collection is the higher-end series that consists of offerings like King Seiko as well as Presage watches with special touches like enamel dials and the more refined pieces in the Prospex collection. Seiko Luxe generally starts around the $750 mark and goes up to over $3,000, so the range is quite broad. Personally, the only Seiko watch I’ve ever purchased is from the Seiko Luxe collection (an enamel dial Presage I reviewed here) and it really is so much watch for the money. King Seiko SPB389 Case and Bracelet When King Seiko first returned to the scene a couple of years back, it w...

eBay Finds: Another Cool Vintage LED, a Gorgeous Grand Seiko, and an Art Deco Bulova Worn & Wound
Grand Seiko Aug 15, 2025

eBay Finds: Another Cool Vintage LED, a Gorgeous Grand Seiko, and an Art Deco Bulova

eBay Finds is back! This bi-monthly installment will feature a selection of watches currently listed on eBay that have caught the eye of editor Christoph McNeil (@vintagediver). If you come across any hidden gems on the ‘Bay drop us a note at info@wornandwound.com for potential inclusion. Shreve & Co LED  Another week, another cool vintage LED! I honestly don’t know why there are so many of these coming out of the woodwork, but I’m glad they are. This one is a vintage Shreve & Co. with a nice space-age chunky look. The 36.5mm steel case is in great shape with sharp edges and unpolished. The bracelet is original and complements the watch perfectly. The display works and the watch runs as it should. Nice 1970’s goodness from a seldom seen brand. View auction here Vintage Grand Seiko 6146-8000  We have a real winner here, a vintage Grand Seiko 6146-8000 dress watch. This 61GS epitomizes Grand Seiko’s Grammar of Design aesthetic. The broad planes, sharp edges and mix of brushed and polished finishes is simply sublime. The silver dial is clean and has the classic simple stick markers and a day/date window at 3 o’clock. The dauphine hands have gorgeous bevels, a testament to the precise craftsmanship of the Grand Seiko line. The 6146 movement is hi-beat, pulsing at 36000 beats per hour. The deeply grooved crown is original and signed with the GS logo as it should. The gold GS caseback medallion is in really nice condition as well. Really a beautiful piece here. Vie...

The Ultimate Guide To The Seiko 5 'SKX' GMT (2026) Teddy Baldassarre
Rolex Submariners Aug 13, 2025

The Ultimate Guide To The Seiko 5 'SKX' GMT (2026)

If you’ve been in the watch game for long enough, there is a better-than-zero chance that you’ve owned, had someone recommend for you to own, or have at least come across the Seiko SKX series. The Seiko SKX (notably the black SKX007 and Pepsi-style SKX 009) once served as the go-to value proposition in all of watches. You can still find them trading on the open market for upwards of $500, but there was a time where one could be had easily for $150-$200. A 42mm, ISO-certified, bona-fide dive watch, the SKX represents the last vestige of a true tool watch that predates hype and everything that comes with it. I own one, and continue to wear it, scratch it and bang it around fearlessly. Seiko filled the dive-adjacent void once filled by the SKX, now discontinued, with a series of Seiko 5 models in all manner of colors that resemble the SKX but never quite took the idea across the finish line. And that’s because the SKX was a cult classic for a reason. It married function and form (except for accuracy, but that’s hardly why you buy a sub-$300 diver) in a way that we only hear about in tales from our “elders” who used to buy Rolex Submariners and GMT-Masters for $150 five decades ago. It’s been a number of years now since the SKX has been a production model in the broader Seiko lineup. But just two summers ago, the venerable, vertically integrated, Japanese juggernaut of a brand unveiled something new in the Seiko 5 range –  a travel-ready, SKX-looking release ...

Introducing The Seiko 5 Sports × Pepsi Limited Editions - Are These The First Watches With Official Pepsi Bezels? Fratello
Rolex s GMT-Master was Aug 12, 2025

Introducing The Seiko 5 Sports × Pepsi Limited Editions - Are These The First Watches With Official Pepsi Bezels?

When people mention Pepsi in the watch world, they refer to the red and blue colors on a GMT or dive bezel. Rolex’s GMT-Master was the first watch with such a bezel, but Seiko also made numerous watches with red and blue bezels. In a surprising turn of events, Seiko has now launched two new […] Visit Introducing The Seiko 5 Sports × Pepsi Limited Editions - Are These The First Watches With Official Pepsi Bezels? to read the full article.

Sunday Morning Showdown: Zenith Chronomaster Sport Vs. Grand Seiko Tentagraph Fratello
Grand Seiko Tentagraph Sunday morning! Time Aug 10, 2025

Sunday Morning Showdown: Zenith Chronomaster Sport Vs. Grand Seiko Tentagraph

Sunday morning! Time for a cup of coffee and another Sunday Morning Showdown. This week, Mike and Jorg go head-to-head in a battle of the titanium high-beat chronographs. Mike’s pick this week is the titanium Grand Seiko Tentagraph. The first blue dial model was released in 2023 and got a follow-up this year. However, the […] Visit Sunday Morning Showdown: Zenith Chronomaster Sport Vs. Grand Seiko Tentagraph to read the full article.

Introducing: The Seiko Alpinist EU Limited Edition In Blue Fratello
Seiko Alpinist EU Limited Edition Aug 9, 2025

Introducing: The Seiko Alpinist EU Limited Edition In Blue

There’s no shortage of Seiko releases these days, but few pique our interest quite like a new Alpinist. The rugged field watch has earned cult status over the years, balancing quirky charm with real-world capability. Now, with the introduction of the Seiko Alpinist SPB531, the brand adds a Europe-only edition in a deep, moody blue. […] Visit Introducing: The Seiko Alpinist EU Limited Edition In Blue to read the full article.

Insight: Hairspring Materials and Evolution Part II SJX Watches
Seiko SPRON 610 hairspring Lastly Aug 8, 2025

Insight: Hairspring Materials and Evolution Part II

Part I of our story on the evolution of hairspring materials covered temperature compensation along with the development of the first specialised balance spring alloy, Elinvar. The story brought us to the 1920s, when scientist and horologist Charles-Edouard Guillaume (1861-1938) finished his work on nickel-iron alloys and watchmakers begun embracing Elinvar springs paired with mono-metallic balances. In this second part we turn to newer hairspring alloys, like the now-ubiquitous Nivarox. Then we look at today’s landscape and the future, touching on research done by the Swatch Group with alternative, niobium-based alloys and also the specialised but obscure Seiko SPRON 610 hairspring. Lastly we discuss silicon springs, which are growing more prevalent across a range of timepieces. Elinvar’s weaknesses Elinvar was by far the greatest breakthrough in self-compensating alloy hairsprings at the time. Guillaume considered Elinvar good enough and not needing further improvement - unsurprisingly since he was its inventor - but other watchmakers and engineers continued to experiment with iron-nickel compounds because Elinvar’s inherent properties made it a good, but imperfect, material. Even though the alloy behaved predictably with temperature changes, its physical properties were not ideal to begin with. Elinvar was a soft metal, which posed its own suite of problems for spring applications. The importance of softness in terms of hairspring performance is not related ...

MechaQuartz: The Hybrid Chronograph Movement Explained Teddy Baldassarre
Seiko s Spring Drive calibers Aug 6, 2025

MechaQuartz: The Hybrid Chronograph Movement Explained

Watches with mechaquartz movements are a small but quietly growing niche within the industry, particularly in the ambitious, creative, and extremely budget-conscious world of small independent watchmaking. Watchmakers have discovered that these “hybrid” movements, which offer quartz-level accuracy along with a dose of mechanical appeal, can often provide the opportunity to make chronograph watches that entice watch enthusiasts while still maintaining the affordable price points that keep their brands competitive. But what is a mechaquartz movement, exactly, and what watch brands are currently offering the most interesting examples of this technology? Read on. What is a MechaQuartz Movement? In a nutshell, mechaquartz (which various brands and other sources have also spelled mecaquartz, meca-quartz, or mecha-quartz) refers to a chronograph movement that combines a battery-powered quartz crystal oscillator for the main timekeeping (i.e., the hours, minutes, and running seconds) with a mechanical module for the stopwatch functions. The latter element ensures that the chronograph seconds hand sweeps smoothly over the dial, as in a fully automatic watch, rather than in short jumps, as it would operate in a fully quartz one, and that the seconds hand will snap back instantly to zero at the end of a time measurement.  A mecaquartz movement is often referred to as a hybrid movement, but it’s not a hybrid in the same technical sense as, say, Seiko’s Spring Drive calibers, ...

The Pepsi Challenge: Seiko Continues their Summer of Licensing Worn & Wound
Seiko Continues their Summer Aug 6, 2025

The Pepsi Challenge: Seiko Continues their Summer of Licensing

A few months ago when Seiko unveiled their Jaws watch, I didn’t really think much of it. Jaws is one of the most popular movies ever made, and it’s celebrating a big anniversary this year. In a world where watch brands collaborate with all kinds of silly entities for all kinds of silly reasons, it seemed like a pretty normal release. Then, just in the last week, Seiko announced a trio of watches bearing the Datsun name. OK, a Japanese car – a cult classic car at that – doesn’t require a whole lot of mental gymnastics to figure out. But then yesterday, when I opened Instagram over my morning coffee and saw the new Seiko “Pepsi” watches, reader I have to admit: it broke my brain a little.  At first I thought it must be a prank or a joke. Maybe Seiko’s account got hacked and one of these new AI engines built an entire marketing campaign around the most on-the-nose “collaboration” yet? But no, a little digging revealed that the two new Seiko 5 Sports watches with blue and red Pepsi bezels were indeed an endeavor bearing the name of the number 2 cola in the country. We’ve been referring to bezels in this colorway as “Pepsi” bezels for longer than I’ve been involved in the watch industry, as a hobbyist and certainly as a professional. It certainly never occurred to me that one day the beverage company would sign on as what amounts to an official partner with a watch brand. But it’s a testament to the ultra-corporatized watch world we’re all livin...

From Homage to Heritage: Why I Traded My Seiko SPB317 for the 6105-8000 Fratello
Seiko SPB317 Aug 6, 2025

From Homage to Heritage: Why I Traded My Seiko SPB317 for the 6105-8000

Every once in a while, a big box with Seiko watches arrives at the Fratello office. It contains the brand’s releases for the upcoming months and allows us to review and photograph them ahead of time. I still remember when I discovered the Seiko SPB317 in there, back in 2022. I immediately fell in love […] Visit From Homage to Heritage: Why I Traded My Seiko SPB317 for the 6105-8000 to read the full article.

Introducing - The Seiko 5 Sports x Pepsi SSK047 and SRPL99… The Watches That You Can Now Rightfully Call Pepsi Monochrome
Seiko 5 Sports x Pepsi Aug 5, 2025

Introducing - The Seiko 5 Sports x Pepsi SSK047 and SRPL99… The Watches That You Can Now Rightfully Call Pepsi

If it were only for the watches themselves, this would have been average news… But what properly got the ice-cool factor is that for once, we’ll be able to officially name watches with a red and blue bezel: Pepsi! You know the idea, we, watch enthusiasts, love to give nicknames to emblematic watches, something particularly […]

Seiko Introduces Six New Speedtimers, Including Three Limited Editions Celebrating the Datsun 240Z Worn & Wound
Seiko Introduces Six New Speedtimers Aug 5, 2025

Seiko Introduces Six New Speedtimers, Including Three Limited Editions Celebrating the Datsun 240Z

We’re several years deep into the era of collaborative, limited edition watch releases, and while a lot of the hype has subsided around some of these drops, there’s no sign that the overall strategy is shifting anytime soon. Brands both large and small are still keen to slap partner logos on dials and casebacks, and draw parallels between watches and, well, you name it. Obviously, the automotive world is ripe for these collaborations, and is the window through which a trio of new Seikos come into our lives. Three limited edition references made in partnership with Datsun are the headline here, but in a smart move, Seiko is simultaneously announcing corresponding regular production models that riff on the same themes without all the branding. So there’s something here for the Datsun enthusiast (of which we know there are many) as well as those that are more inclined to shun this type of commercial cross-polination and just want their watch to be a watch and not an exercise in remembering a very specific link to a carmaker’s history.  The premise for all these watches (or rather, for the limited editions) is Seiko’s relationship with Datsun, which dates back to the early 1970s when Seiko supported the 240Z in races across the world. Most notably, Seiko was a sponsor of the #11 car that won the East-African Safari Rally, a 6,200 kilometer race that is generally regarded as one of the most challenging on the international circuit.  All of the watches discussed here...

Has Seiko Reignited A Little Magic With Its New Limited Edition 5 Sport? Fratello
Seiko Reignited Aug 5, 2025

Has Seiko Reignited A Little Magic With Its New Limited Edition 5 Sport?

Seiko is an absolute titan in the watch industry. The number of key timepieces in the brand’s catalog is too long to list here. Nevertheless, it’s a brand that has faced an identity crisis over the last half-decade or so, I would argue. The new SRPL91 and SRPL93 Seiko 5 Sports series show just how […] Visit Has Seiko Reignited A Little Magic With Its New Limited Edition 5 Sport? to read the full article.

Introducing - The Europe-Exclusive Seiko Prospex Alpinist Night Sky SPB531 Monochrome
Seiko Prospex Alpinist Night Sky Aug 4, 2025

Introducing - The Europe-Exclusive Seiko Prospex Alpinist Night Sky SPB531

One of the oldest Seiko watches still in production, the Alpinist was introduced in 1959 (note that the Laurel, released in 1913, is even more enduring), and it has since become a staple of the brand’s catalogue. Considered Seiko’s first professional watch, it was designed specifically by Seiko for Yama-Otoko, or mountain men. The collection […]