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Results for Slide Rule Bezel

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Slide Rule Bezel Breitling

Rotating logarithmic bezel for pilot calculations. Introduced on Breitling Navitimer 1952 with AOPA; John Glenn Mercury Aurora 7 1962.

The Moser Pioneer Returns with a Dive Bezel (and NFT Connection) SJX Watches
H. Moser & Cie.’s only dive Aug 19, 2025

The Moser Pioneer Returns with a Dive Bezel (and NFT Connection)

H. Moser & Cie.’s only dive watch returns as the Pioneer “Elements of Time”, the result of an unexpected, but not unprecedented, collaboration with Azuki, an anime-inspired NFT, and American retailer The 1916 Company. Unsurprisingly given the digital nature of the collaboration, the watches will only be available online via raffle from Azuki. Representing the four elements of earth, lightning, fire and water, Elements of Time features engraved fumé dials in four colourways. Each is limited to 24 watches in Pioneer Centre Seconds format, along with one unique Pioneer tourbillon per colour. All variants are titanium, matched with bracelet with the amenities you’d expect from a diver, including a micro-adjust clasp. Initial Thoughts While a new Pioneer with a rotating bezel would normally be a major release, you won’t find Elements of Time on Moser’s website. That’s because it’s a collaboration with Azuki, a non-fungible token (NFT). Azuki is Japanese for “red bean”, but Azuki is basically anime-style digital art on the blockchain. But these are real watches – they can be collected at The 1916 Company’s physical stores – and more notably, sport of the most interesting fumé dials from Moser in a while. This isn’t Moser’s first foray into the Web 3.0 world. Back in 2022, the brand launched the Endeavour Centre Seconds Genesis, a watch that was essentially a physical QR code. The timing wasn’t the best as it debuted just as the NFT bubble popped...

A History and Guide – How to Use a Dive Bezel Worn & Wound
Aug 18, 2025

A History and Guide – How to Use a Dive Bezel

John Scott Haldane had a problem. Britain’s Royal Navy had commissioned the Scottish physiologist to find a solution for a unique problem facing their divers: decompression. Known since the mid-19th century, decompression sickness (DCS) posed a serious risk for divers and laborers working in pressurized environments, such as caissons. It was his job to develop a set of decompression tables for safe diving operations. It boils down to how gases act under pressure. When breathing a gas mixture at depth - for the sake of simplicity, we will say compressed air, or approximately 78% nitrogen and 21% oxygen, with the rest being inert gases - the oxygen is used up by the body, and the nitrogen is absorbed into the bloodstream. This build-up will dissolve as it is effectively off-gassed, as it does when each of us breathes here on the surface. Enter pressure. Should a diver undergo a rapid change in pressure, such as by ascending too quickly, the nitrogen will separate from the blood and form bubbles in the tissues and joints. The resulting pain has a habit of contorting its victims, giving DCS its more readily-known nickname of “the bends.” John Scott Haldane had a problem. Britain’s Royal Navy had commissioned the Scottish physiologist to find a solution for a unique problem facing their divers: decompression. Known since the mid-19th century, decompression sickness (DCS) posed a serious risk for divers and laborers working in pressurized environments, such as caisso...

Doxa Adds a Steel Bezel to the SUB 200 Diver Worn & Wound
Doxa Adds May 19, 2025

Doxa Adds a Steel Bezel to the SUB 200 Diver

Doxa added a GMT to their collection for the first time in years to much fanfare recently (we covered it here). This watch got quite a bit of press and stirred considerable interest within the enthusiast community, but to my mind it was only the second best watch the brand showed us when we met with them in Geneva last month (that’s second out of two, just to be clear). I’m not sure what it is, exactly, but I’m a little over the whole “put a GMT on it” approach to product development that the industry has been stuck in for the last few years. Do we really need the ability to track two or more time zones on every watch? And should we really be doing it with movements that perform this function almost by accident and are nearly impossible to use correctly if you’re actually traveling? I’m trying not to be a hater, really I am, but every time I see a new GMT equipped watch that’s just a riff on an existing diver or chronograph, as if a GMT complication is just an extra side on a barbecue platter, I ask myself what it is that we’re doing here, really.  A new version of the Doxa SUB 200 was the other watch Doxa was showing in Geneva last month, although it was embargoed until last week, so I couldn’t come out of that meeting with the blistering hot take that it actually makes a lot more sense as a watch than the SUB 250T GMT, which to me feels like something ChatGPT might invent if you asked it to think of Doxa watches that don’t yet exist. This SUB 200 i...

Introducing – The New Polished Steel Bezel Versions of the Doxa Sub 200 Monochrome
Doxa Sub 200 When Doxa May 5, 2025

Introducing – The New Polished Steel Bezel Versions of the Doxa Sub 200

When Doxa entered the dive watch market, it consulted with experts in the field, including Jacques Cousteau, to understand the needs of professional divers. The Sub 300 of 1967 enjoys a special place in the underwater pantheon of iconic divers, but beyond its formidable underwater capabilities, it became instantly recognisable thanks to its bright orange […]

Longines Trolls Us With A $5,000 ‘Dive’ Watch Featuring a Fixed Bezel: The Ultra-Chron Carbon Two Broke Watch Snobs
Longines Trolls Us Jan 7, 2025

Longines Trolls Us With A $5,000 ‘Dive’ Watch Featuring a Fixed Bezel: The Ultra-Chron Carbon

Let me set the stage for you: somewhere in Switzerland, a Longines executive is sitting in a leather chair, sipping espresso, and staring out over the Alps. “What if,” they muse, “we take a perfectly good dive watch, strip it of its most basic functionality, make it out of fancy plastic, and charge five grand for it?” Cue applause from the boardroom, a slow clap from a guy in a turtleneck, and voilà-the Longines Ultra-Chron Carbon is born.

First Look – The Hamilton Khaki Navy Scuba 40mm, now with a Cool Red Bezel Monochrome
Hamilton Khaki Navy Scuba 40mm Oct 15, 2024

First Look – The Hamilton Khaki Navy Scuba 40mm, now with a Cool Red Bezel

While widely known for its countless apparitions on the silver screen and its military-inspired watches, Hamilton, once an American brand now under the umbrella of the Swatch Group, also carries a rather serious range of aquatic-oriented watches. Sitting alongside the high-performance Frogman and BeLOWZERO collections is the Khaki Navy Scuba, a classic dive watch with […]

Introducing – The Rolex Deepsea 136668LB in 18k Yellow Gold with Blue Dial and Bezel Monochrome
Rolex Deepsea 136668LB Apr 9, 2024

Introducing – The Rolex Deepsea 136668LB in 18k Yellow Gold with Blue Dial and Bezel

The Rolex Submariner and Sea-Dweller are iconic diving watches that have achieved legendary status in horology. Originally launched in 2008, the Deepsea is Rolex’s hardcore diving instrument with a water resistance of 3,900 meters (and 11,000 meters for the Deepsea challenge of 2022). The model was updated at Baselworld 2018 with the reference 126660 featuring […]

The New Casio Oceanus Pays Tribute to the Deep Blue Sea with Spiral-Cut Sapphire Bezel Anchored by Hardened Titanium Case and Bracelet Worn & Wound
Casio Oceanus Pays Tribute Jul 21, 2023

The New Casio Oceanus Pays Tribute to the Deep Blue Sea with Spiral-Cut Sapphire Bezel Anchored by Hardened Titanium Case and Bracelet

The Oceanus might be the last thing you think about when you hear the brand name, Casio. Their elevated range of watches aren’t built with the familiar tough resin case accompanied by a soft urethane band and a digital display. Instead, Casio has elected to encase the Oceanus with titanium paired with distinguishable features that stray away from the utilitarian feel while still integrating their technological know-how in a more analog fashion. In short, this concept is what Casio refers to as, “Elegance, Technology”. The four latest additions include a limited reference and three regular production models that harness the dynamic cerulean hues of the ocean packaged in a coated titanium case and equipped with a suite of familiar features. Like the Manta S500 Series, the Oceanus OCWS6000SW2A takes the bezel and uses it as a canvas to uniquely represent the various features of the ocean. This limited production model in particular displays the movement of the ocean with a spiral-cut sapphire bezel representing the crest and trough of a traveling wave. The blue gradient of the bezel also gives the impression of the continuous motion of the ocean. Although masked by color, the sapphire bezel still allows light to penetrate through, powering the solar panel fixed beneath. As mentioned above, the case is constructed out of titanium and coated with a carbide treatment giving a powdery, sandblasted effect across the non-polished areas. Another distinguishable feature of the ...

[VIDEO] Review: The Black Bay 54 – A Black Bay to Rule them All? Worn & Wound
Tudor launched Jul 6, 2023

[VIDEO] Review: The Black Bay 54 – A Black Bay to Rule them All?

It’s amazing to look back to 2018 and see the utter excitement and disbelief I felt when Tudor launched the Black Bay Fifty-Eight, a sentiment that was shared by many. It seemed as though our hopes and prayers had been answered. Finally, a vintage-inspired dive watch with a great movement at a smaller size, by a brand with provenance. While that seems like daily news in 2023, a sub-40mm dive watch, at the time, from a major Swiss brand was still hard to come by. It was clear Tudor had a hit. And, as per usual, we expected they would capitalize on that hit. In the conclusion of my review from 2019, I say “…it’s likely they will expand greatly on the collection.” I was wrong, and this is where the story of the Black Bay Fifty-Eight, and Tudor, takes a slightly different direction. Rather than doing what most brands do, including themselves with other models, they pumped the brakes. The rainbow of options never came, instead, there were a total of five variations broken down as two in steel, a silver model (still crazy), a solid gold, and a bronze boutique edition. Not what we expected. 37mm is just right Tudor then left the Black Bay Fifty-Eight behind for a while, coming out instead with a series of unexpected sports watches in new-ish platforms. The Pelagos FXD, while part of their larger tech diver line, featured a different case, modified dial and bezel designs, and a genuine military tie-in. The Black Bay Pro put their GMT and a date complication into a 39mm c...

One Watch to Rule Them All: A New Strategy Emerges at Watches & Wonders 2023 Worn & Wound
Patek Philippe booths These brands Apr 12, 2023

One Watch to Rule Them All: A New Strategy Emerges at Watches & Wonders 2023

When you enter Palexpo, the enormous convention center that is home to Watches & Wonders, you have an immediate decision to make: right or left? A glance to the left and you see the Tudor, Rolex, and Patek Philippe booths. These brands, in a lot of ways, anchor the entire show, and dominate much of the conversation for the duration of the fair. If you look to your right, you’ll be greeted by something entirely different. This year, it was a giant Ingenieur, spread across the top of the IWC booth at the end of the hall, and it was hard not to get the message that this watch, and this watch alone, was the brand’s sole focus for Watches & Wonders this year. Building your Watches & Wonders presence around a single watch was a trend that came into sharp focus at this year’s event.  The IWC booth at Watches & Wonders, viewed from the opposite end of the hall. Whether brands took a literal one watch approach (like Ulysee Nardin, who only showed the new Freak ONE this year) or put the lion’s share of their backing behind one release but dropped a few additional under the radar pieces (like IWC), it’s a strategy that makes for a stark contrast with what feels like a more traditional practice of overwhelming everyone in the meeting with tray, after tray, after tray of new watches to try on, photograph, write about, and otherwise consider. The single watch strategy communicates a sense of confidence, that a brand has hit on something so good that they don’t need to muddy...

Ollech & Wajs’ Astrochron S Combines a 500 WR Dive Chronograph with a Compass Bezel and Regatta Counter Worn & Wound
Mar 13, 2023

Ollech & Wajs’ Astrochron S Combines a 500 WR Dive Chronograph with a Compass Bezel and Regatta Counter

If I had a time machine to visit any point in history, my adventurous spirit would punch in the year 1969. This was already a period rich with daring exploration, technological innovation, and historical achievement that inevitably led to the culmination of the Space Race with NASA putting a man on the moon. But that wasn’t the only “high stakes” race going on at the time. Watch brands all over the world were jockeying for position to see who could make the most robust tool watch for explorers foraying into the most extreme conditions including the unknown depths of the ocean, mountainous death zones, and of course, outer space. Ollech & Wajs was one of the brands that were most certainly in the mix with their own multi-functional triple register chronograph aptly dubbed the Astrochron. The Astrochron’s distinctive multi-scale display made it a popular choice among engineers and scientists in NASA’s research and development lab including Chief Rocket Scientist, Werner Von Braun, or otherwise known as the “father of space travel.” Equipped with a rotating 12 hour bezel, tachymeter scale on the dial, chronograph timer, and a slew of other attractive tool watch features, the Astrochron found its way onto the wrists of sportsmen, pilots, and ship officers alike. Recently, Ollech & Wajs has decided to revisit the design and one glance will confirm that this isn’t your original 1967 Astrochron. With the new refresh, Ollech & Wajs’ already capable multi-function...