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Results for Caliber 9SA5

722 articles · 140 videos found · page 4 of 29

Watches & Wonders: Grand Seiko’s Nature-Inspired SBGZ011 Spring Drive Limited Release Shows The Shape of Water Worn & Wound
Grand Seiko s Nature-Inspired SBGZ011 Spring Apr 16, 2026

Watches & Wonders: Grand Seiko’s Nature-Inspired SBGZ011 Spring Drive Limited Release Shows The Shape of Water

Deep in the heart of a primeval forest lies a waterfall whose fresh spring waters are unspoilt by man, and whose mystic beauty is an endless source of inspiration - for the band of artisans who quietly engrave by hand some of the most intricately detailed watches in the world. It’s not a Studio Ghibli movie: the Tateshina Falls are real, located in central Japan’s Nagano Prefecture, which is also home to Grand Seiko’s Micro Artist Studio. And at Watches and Wonders 2026, a limited release pays tribute to this serene locale with a Spring Drive model that, according to Grand Seiko, “conveys time’s eternal flow in nature.”  The Masterpiece Collection SBGZ011 takes Grand Seiko’s sharp-edged 44GS case - rendered in platinum - and imbues it with hand-engraved lines from lug to lug, around the bezel, and entirely within the dial (save for a thin minute ring). These dashed silver lines flow in colliding swirls, bursting forth and blending into each other with seeming chaos; Grand Seiko suggests that they represent spring water bubbling forth from below the earth’s surface. On the bezel and the case’s flat surfaces and intersecting ridges, the patterns appear even more dramatic, resembling petals of a monochromatic flower. And on the dial, the white-gold hands and markers provide smooth, brilliant contrast, while the Grand Seiko and Spring Drive logos are carved and inset in their own boxes.  The manual-winding Caliber 9R02 is Grand Seiko’s thinnest Spri...

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Seiko Astron SSH151 Dec 17, 2025

[VIDEO] The Seiko Astron SSH151, an Award-Winning Tech-Forward Timepiece

Seiko launched the Astron in 1969, changing not just the brand’s trajectory but the way watches were made. The first commercially available quartz wristwatch, it arrived in solid gold and cost ¥450,000, about $1,250 at the time, or roughly $10,000 in 2025. Though “vintage” to modern eyes, its design was surprisingly luxurious and quietly radical, blending traditional finishing with industrial design cues in a way only Seiko could achieve. The exterior, however, was not the main story. The caliber 35SQ inside is what rewrote horology. With a quartz oscillator vibrating at 8,192 Hz, it delivered accuracy far beyond the mechanical watches of the day. It was not only a proof-of-concept that pushed horology into the 20th century, it also proved that Seiko was willing to innovate in an industry steeped in tradition.   The post [VIDEO] The Seiko Astron SSH151, an Award-Winning Tech-Forward Timepiece appeared first on Worn & Wound.

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Patek Philippe Star Caliber 2000 Under the Hammer at Sotheby’s Abu Dhabi SJX Watches
Vacheron Constantin Oct 27, 2025

Patek Philippe Star Caliber 2000 Under the Hammer at Sotheby’s Abu Dhabi

The Patek Philippe Star Caliber 2000 stands as one of the most technically ambitious pocket watches of the modern era. Launched to mark the turn of the millennium, it was the fourth most complicated watch in the world at its debut, but its true significance lies not in numbers, but in the ingenuity of its mechanisms, which redefined how grand complications could be conceived, engineered, and executed. An original complete set of four Star Caliber 2000 watches is being offered for sale by Sotheby’s at its first-ever watch auction in Abu Dhabi, which takes place in December. The first complete set to ever appear publicly, the sale will likely draw significant attention from collectors and institutions alike. The technical significance of the Star Caliber 2000 The Star Caliber 2000 was and is a remarkable achievement in watchmaking, but it was never the world’s most complicated watch. When it debuted, the Star Caliber 2000 ranked fourth in the official tally of complications, behind the Patek Philippe’s own Caliber 89 and the famous Henry Graves Super Complication from 1932, as well as the lesser-known Leroy 01 from 1904. Over the past quarter century, the Star Caliber 2000 has fallen down the rankings as more complicated watches, for both the pocket and the wrist, have been developed by Vacheron Constantin and Audemars Piguet. But the Star Caliber 2000 should not be judged solely by this kind of ranking, which is largely superficial. The watch is packed with a number o...

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Seiko’s Premier Diver-GMT Gets an Update with the Prospex SPB519 1968 Heritage Diver’s GMT Worn & Wound
Seiko s Premier Diver-GMT Gets May 6, 2025

Seiko’s Premier Diver-GMT Gets an Update with the Prospex SPB519 1968 Heritage Diver’s GMT

A new diver release from Seiko isn’t exactly going to set the world on fire, but it will surely please the legions of fans of the brand and its Prospex line. With a crisp white and blue colorway and nifty bracelet that can be microadjusted as wrist size changes throughout the day, the 1968 Heritage Diver’s GMT looks to be a worthy-if subdued-addition to the ever-growing catalog of Seiko dive watches. Pulling from a long tradition of purpose-built Seiko dive watches, the new SPB519 reference features a stainless steel case measuring in at 42mm in diameter, 48.6mm lug-to-lug, and 13.3mm thick, giving it a heftier frame than 2023’s closely-related Heritage Diver’s GMT (SPB381). A unidirectional bezel, and screw-down caseback and crown at 4 o’clock further push the watch into “serious” diver waters, supported by the 300-meter water resistance rating. Stylistically, the SPB519 takes on a sort of jaunty sailor persona, with a navy blue ceramic bezel and a silvery white dial. The applied indexes and hands are coated in LumiBrite, as are numerals on the bezel, and an anti-reflective coating protects the inner surface of the sapphire crystal.  Inside, the Caliber 6R54 automatic hand-winding GMT movement adds some spice to the otherwise by-the-numbers functionality of the watch, and boasts a 72-hour power reserve and “caller-style” independent 24-hour hand. The most interesting feature of the 1968 Heritage Diver’s GMT, however, lies with the bracelet, which ...

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Introducing: The New Seiko Prospex 1968 Heritage Diver’s GMT 60th Anniversary Edition SPB519 Fratello
Seiko Prospex 1968 Heritage Diver’s Apr 30, 2025

Introducing: The New Seiko Prospex 1968 Heritage Diver’s GMT 60th Anniversary Edition SPB519

Seiko is marking 60 years of diver’s watches with a new take on its successful GMT line, the Seiko SPB519. Today, Seiko has released a new Heritage Diver’s GMT watch in the Prospex collection. The brand has been on a powerful streak of late with their Prospex line, including improving the calibers on offer. The […] Visit Introducing: The New Seiko Prospex 1968 Heritage Diver’s GMT 60th Anniversary Edition SPB519 to read the full article.

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Panerai’s Latest Collaboration with the NAVY SEALS Highlights the Submersible in Four Variations Worn & Wound
Panerai s Latest Collaboration Sep 24, 2024

Panerai’s Latest Collaboration with the NAVY SEALS Highlights the Submersible in Four Variations

Panerai has announced a quartet of watches made in partnership with the U.S. NAVY SEALS, a capsule collection meant to highlight the brand’s mission of crafting reliable, purpose driven watches. All of the models share an aesthetic link through the use of camo patterns and dial effects and are based on collector favorite references from the Submersible collection. In a catalog filled with burly, oversized watches, the Submersible line is perhaps the most outwardly sporty, reflecting a more contemporary approach to divers, chronographs, and GMTs than you might find in the brand’s more heritage focused lines. The first model to receive the Navy Seals treatment is the Submersible QuarantaQuattro NAVY SEALS PAM01518. As the name suggests, this one is based on their stainless steel 44mm Submersible. Instead of their regular lume application, this one features sand-colored SuperLuminova on the hands, markers, and lume pip on the bezel. It is equipped with the Panerai P.900 caliber in-house automatic movement, which operates at 28,800 beats per hour and boasts a substantial 3-day power reserve. “NAVY SEALS” is displayed on the dégradé black to anthracite dial at 6 o’clock. When the watch is flipped over, a beautifully engraved commemoration of the NAVY’s special forces team is revealed. It is rated for water resistance up to 300 meters. The second model is the Submersible QuarantaQuattro GMT NAVY SEALS Carbotech PAM01513. Similar to the previous model, this one is b...

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A Look At Miyota’s 8-Series Movements For Microbrands Fratello
Citizen s Miyota operation Feb 13, 2024

A Look At Miyota’s 8-Series Movements For Microbrands

Last year, Thomas gave an introduction to Citizen’s Miyota operation, with a focus on the Miyota 9-series movements and their use in many microbrands we are familiar with. The consensus is that this popular family of automatic calibers offers plenty in terms of specifications, variety, customization, and value. Today, I’m looking at the 8-series movements, […] Visit A Look At Miyota’s 8-Series Movements For Microbrands to read the full article.

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Bremont’s Refreshes the Supermarine S302 Worn & Wound
Bremont s Refreshes Oct 31, 2023

Bremont’s Refreshes the Supermarine S302

Bremont is launching a new generation of Supermarines with not one, not two, but three configurations. The headliner is a special edition created in partnership with freedivers and conservationists Ocean Ramsey and Juan Oliphant, while the other two are regular production models with new color schemes and materials. The Supermarine line has been a mainstay for Bremont, and this infusion of models looks to take it to the next level. Let’s get the specs out of the way: all three new references are 40 mm wide, 49 mm long, and 13 mm thick. Lug widths are a friendly 20 mm, and the cases are made of scratch resistant DLC treated stainless steel. Unidirectional ceramic bezels (more on that later) surround four-handed dials with dates at 3. A modified caliber BE-932AV provides 50 hours of power reserve, and water resistance is rated at 300 meters. All the Supermarines are Chronometer rated to the ISO 3159 standard. First up, the Supermarine Ocean. Limited to 400 pieces, this model is designed with respect to Ocean and Juan’s work with sharks and other endangered sea creatures. The bezel, dial, and integrated rubber strap are appropriately called “Thresher Grey,” and proceeds from each sale will benefit the “Save the Turtles International” charity. Aesthetically, the gray and beige tones work well with the orange text on the dial, rehaut, and GMT hand. Note that, like the S302 JET, the 24-hour bezel on the Supermarine Ocean is monochromatic. The watch can be configured ...

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Grand Seiko Introduces the Caliber 9S 25th Anniversary SBGH311 and SBGR325 SJX Watches
Grand Seiko Introduces Jan 10, 2023

Grand Seiko Introduces the Caliber 9S 25th Anniversary SBGH311 and SBGR325

When Grand Seiko (GS) made its return in 1998, the inaugural SBGR001 model was powered by the 9S55, the first modern-day GS calibre. Now the brand is marking the 25th anniversary of the 9S movement family with a pair of limited editions. The Heritage Collection Caliber 9S 25th Anniversary Hi-Beat 36000 SBGH311 and the Heritage Collection Caliber 9S 25th Anniversary SBGR325. The Hi-Beat SBGH311 has a patterned dial, while the more affordable SBGR325 has a dial with a brushed finish. Both are modelled on the original model of 1998 and sport the same 37 mm case. SBGH311 (left) and SBGR325 Initial thoughts With their 37 mm cases and clean styling, the new 9S pair hark back to the GS watches made from the late 1990s to mid 2000s. That is unsurprising since they are meant to commemorate the first model with the 9S movement, which made its debut in 1998. The Hi-Beat SBGH311 does have a fancier pattern dial, but one that is relatively subtle in its shades-of-grey texture. As a result, they will appeal to anyone who wants a smaller, simpler GS watch. Another upside of the relatively simpler execution are the prices, which place the pair amongst the most affordable self-winding GS watches. The SBGH311 is US$6,600 and the SBGR325 about 20% less. SBGR325 Old-school size The SBGH311 has a textured dial in silvery grey inspired by clouds that’s matched with a blued-steel seconds hand. And the “GS” emblem is gilded in a nod to the fact that this is an anniversary edition. Not...

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Is Tudor’s Revamped Royal Collection Actually their Best Watches & Wonders Release? Worn & Wound
Tudor s Revamped Royal Collection Apr 17, 2026

Is Tudor’s Revamped Royal Collection Actually their Best Watches & Wonders Release?

As is always the case with Tudor, it seems that the internet is divided on their major new Watches & Wonders releases in the days after their unveiling. But while comments are volleyed back and forth on whether the of the Black Bay 54 Blue is actually too purple, or the Monarch should have been smaller, one new release that actually might be kind of perfect is going under the radar.  Ok, “perfect” could be overstating it, but the newly relaunched Tudor Royal really impressed me. If there’s a “most improved” award to be handed out to a collection, the Royal might grab it.  There are three sizes, 30mm, 36mm, and 40mm, all with manufacture calibers for the first time in the collection. The 40mm Royal has a day-date indication that is similar (identical, really) to the execution of the day-date on the Rolex Day-Date. All of the movements (MT5201, MT5412 and MT5633) are chronometer certified.  Aesthetically, these are integrated bracelet sports watches that veer more toward the elegant end of the sports watch spectrum. Long a staple for Tudor in the Asian market, they’re looking to expand the Royal’s reach this year with some very noticeable finishing improvements. The bezel in particular is very nicely executed, with sharp notches and a very high polish that works particularly well on the two tone models, where it is rendered in gold.  I think another factor working in Tudor’s favor with respect to the Royal is the current broad acceptance of smaller watche...

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TAG Heuer’s Latest Monaco is an Impressive Achievement in Additive Manufacturing Worn & Wound
TAG Heuer s Latest Monaco Nov 19, 2025

TAG Heuer’s Latest Monaco is an Impressive Achievement in Additive Manufacturing

Dubai Watch Week is upon us, and TAG Heuer is using it as a launching pad for for a new version of what is objectively one of the most impressive watches they’ve ever made. The Monaco Split-Seconds Chronograph Air 1 builds on the Monaco Split-Seconds that was introduced at Watches & Wonders in 2024. That one, you’ll recall, had a movement fashioned largely from titanium and weighed in at just 85 grams. The retail price at the time was a head scratching CHF 135,000, but it was also an incredibly impressive caliber and feat of engineering. Rattrapante chronographs like this are indeed quite rare, and certainly one with a caliber made of titanium is unheard of and adds additional layers of complexity to whole endeavor.  The new Air 1 version of the watch is still 85 grams, but it achieves that weight even with new solid gold components in the case. The design of the case, still in the iconic Monaco square, has been substantially reworked and inspired by design and manufacturing processes that are part of the Formula 1 landscape. The case has effectively been hollowed out, with intricately skeletonized case flanks designed to maximize the weight to performance ratio. TAG Heuer achieves this through a process they refer to as Selective Laser Melting (SLM). This is an additive manufacturing process that is typically applied in aerospace, medical, and automotive manufacturing, and like other forms of 3-D printing it’s essentially a cheat code in achieving otherwise impossi...

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Grand Seiko Adds a New Dress Watch with the 9SA4 Caliber to the Collection, Plus a New Tentagraph Worn & Wound
Grand Seiko Adds Sep 11, 2025

Grand Seiko Adds a New Dress Watch with the 9SA4 Caliber to the Collection, Plus a New Tentagraph

Almost as soon as Grand Seiko released the SLGW002 and SLGW003 at Watches & Wonders 2024, we started to wonder what this new class of manually wound dress watch from one of our favorite brands might look like in different variants. This seemed like a natural platform for expansion, and we figured it was just a matter of time before we saw some alternative dial options and new metals. In the year and a half or so since Grand Seiko introduced these watches, and the 9SA4 caliber powering them, things have been quiet on the manually wound dress watch front. That is, until this week, when we finally got a peek at the new SLGW007, Grand Seiko’s first new launch with this case and movement since the big debut at Watches & Wonders last year.  While the most obvious update on the surface here is certainly the new dark blue dial, it’s actually the case itself that really has my interest. The SLGW003, you’ll recall, was crafted from Grand Seiko’s Brilliant Hard Titanium. This is a very cool material, for sure, but has a niche appeal in a classically styled dress watch like this thanks to its ultra light weight and the associations we all have with titanium and tool watches. The SLGW007 is in stainless steel, and I’m incredibly curious to see how this might change the character of the watch on the wrist. One would certainly expect it to be a bit heavier, but I imagine the finishing will also have a slightly different, perhaps more traditional look to it, at least in the con...

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Seiko’s Advanced Astron Collection Gets Four New References Worn & Wound
Seiko s Advanced Astron Collection Mar 17, 2025

Seiko’s Advanced Astron Collection Gets Four New References

If you like your watches complicated and your timezones varied, chances are you’re already aware of the Seiko Astron GPS Solar line, first launched in 2012. No, the watch doesn’t shout haphazard driving directions at you. Instead, its latest models use GPS technology and a solar-sensitive dial to automatically update the time according to your geographic position up to twice a day. But Seiko wasn’t done there-almost exactly a year on from the introduction of the Caliber 5X83, the first pairing of Dual-Time tech with a chronograph function, Seiko has unleashed four new Astron GPS Solar Dual-Time Chronographs. Each of the four new watches-references SSH175, SSH177, SSH179 and limited-edition SSH180-features a titanium bezel with a sapphire crystal insert, adding a touch of practicality and elegance to the already robust profile of the Astron. An imposing 44mm mirror-polished titanium case houses the Caliber 5X83 movement, which promises a litany of advanced features, most prominent of which is the aforementioned GPS-controlled time and time zone adjustment. A world time function, perpetual calendar correct to the year 2100, automatic DST adjustment, AM/PM and signal reception indications, accuracy of +/- 15 seconds per month, and more round out the slate of functions. Of course, the titular chronographs also loom large on the dial, with a 1/20th second counter at 12 o’clock and a 12-hour counter with hours and minutes at 6 o’clock during chronograph operation...

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Photo Report: Assembling Caliber 9SA4 at the Grand Seiko Boutique Worn & Wound
Grand Seiko Boutique I’ve always had Jun 30, 2024

Photo Report: Assembling Caliber 9SA4 at the Grand Seiko Boutique

I’ve always had a fascination for peeking behind the curtain. Whether it was tearing apart broken electronics, rebuilding car engines, or opening the caseback of my first Seiko, I’ve always wanted to see and know how things work. As I’ve gone deeper into the horology rabbit hole, I’ve become more interested in the physical process of assembling a movement. While I can watch any number of YouTube videos, there’s something special about seeing it done in person, especially when you get to watch a Grand Seiko Watchmaker at work. Last week, I was invited to Grand Seiko’s boutique for a live assembly of their new 9SA4 movement, a high-beat, manually wound high frequency movement featuring Grand Seiko’s proprietary dual impulse escapement and 80 hours of power reserve. If you’d like to learn more about the 9SA4 and how it was created from the 9SA5, Zach Kazan covers that in detail here. This event was hosted at Grand Seiko’s Madison Avenue boutique (we celebrated the grand opening of this boutique in March, click here for the recap article) which features a gorgeous open concept main level, and an intimate lower level they’ve dubbed “The Cellar”. Unlike any cellar I’ve ever been in, this lower level features multiple lounge spaces, a full bar, a dedicated presentation space and, of course, plenty of watches. You’ll also find various items of cultural significance from the towns surrounding the Grand Seiko Studio Shizukuishi, which inspire the design o...

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Watches, Stories, & Gear: An Incredible Parmigiani Fleurier Pocket Watch, Zuck’s Hawaiian Bunker, and the 100 Best TV Shows of All Time Worn & Wound
Parmigiani Fleurier Pocket Watch Zuck’s Hawaiian Dec 23, 2023

Watches, Stories, & Gear: An Incredible Parmigiani Fleurier Pocket Watch, Zuck’s Hawaiian Bunker, and the 100 Best TV Shows of All Time

“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. Share your story ideas or interesting finds by emailing us at info@wornandwound.com Parmigiani Fleurier L’armoriale Pocket Watch  Sometimes we get word of a watch that is just too beautiful and special not to feature. It’s become a tradition for Parmigiani Fleurier to create a special, completely unique pocket watch every year to celebrate founder Michel Parmigiani’s birthday, and this year they’ve really outdone themselves with a watch they’re calling L’armoriale.  The heart of the timepiece is a mechanical caliber dating to 1890 that was restored by Parmigiani in 1985. Originally a chronograph minute repeater, the movement now features both of those complications as well as a perpetual calendar with a moonphase, a pretty incredible demonstration of Parmigiani’s skill as a watchmaker as well as his devotion to restoration and preserving and sometimes even enhancing horological history. The white gold case features a beautiful enameled caseback, and of course virtually everything here is completely handmade and hand finished, down to the intricate chiseled adornments that run across the case band. It’s a real work of art, worth spending some time gawk...

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