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Results for Mainspring Types and Alloys

30,383 articles · 159 videos found · page 11 of 1019

Seiko Samurai Review: Smaller And Better Than Ever Teddy Baldassarre
Seiko Aug 1, 2025

Seiko Samurai Review: Smaller And Better Than Ever

Last year, we saw a trio of new Seiko Samurai watches that aimed to broaden the collection’s appeal within the Prospex family. It’s fairly well understood that the Samurai has been seen as the odd man out among the “Seiko with a nickname” family, but why exactly is that? Well, it doesn’t have that vintage heritage, having only debuted in 2004. Also, the second generation has been around since 2017, and since then, tastes have certainly changed. The 44mm-wide case is a little too big for today’s tastes, where conventional wisdom puts anything above 42mm safely in the “huge” category (the case has been pretty thick, as well) . And while models like the Turtle, SKX007, or Willard (or even Tuna and Arnie) have rounded cases, the Samurai’s case has a very sharp and almost aggressively angular design that, again, is not for everyone. Wisely, Seiko’s third-generation Samurai addresses that persistent case-size issue while giving the dial a refresh too. Fortunately, the angular case is a bit more refined, yet no less geometrical. Sorry, that’s just part of the Samurai’s identity. Seiko Samurai Case and Bracelet First off, yes - the new Seiko Samurai has taken design cues from the Shogun. If that makes it not a “true Samurai,” then so be it, but the end result is one good-looking watch. The case improves over that of the second generation in just about every meaningful way (the older case is still available alongside this new iteration). First off, it ...

Fratello EDC: Daan Shares His Everyday Carry Essentials From The North Face, Montblanc, Bellroy, Serengeti, And More Fratello
Montblanc Bellroy Serengeti Jul 29, 2025

Fratello EDC: Daan Shares His Everyday Carry Essentials From The North Face, Montblanc, Bellroy, Serengeti, And More

I am not entirely sure why, but back in 2022, I didn’t participate in the Fratello EDC (Everyday Carry) series. That’s great because it allows me to go all out this time. Some of the things I’ll mention today have been with me for quite a few years now, while others are more recent acquisitions. […] Visit Fratello EDC: Daan Shares His Everyday Carry Essentials From The North Face, Montblanc, Bellroy, Serengeti, And More to read the full article.

Professional Diver Nigel Band and the Unusual Rolex Sea-Dweller and Oyster Perpetual Models that Plumbed the Depths and Scaled the Heights – Reprise Quill & Pad
Rolex Sea-Dweller Jul 28, 2025

Professional Diver Nigel Band and the Unusual Rolex Sea-Dweller and Oyster Perpetual Models that Plumbed the Depths and Scaled the Heights – Reprise

Nigel Band is a professional diver with over 30 years’ worth of commercial and teaching experience. He also owns two rather unusual Rolex watches: a 1986 “triple-six” Rolex Sea-Dweller Reference 16660 and a Himalayan mountain climbing 1952 Rolex Oyster Perpetual. Put on your breathing apparatus as the fascinating stories of these two watches are told by Colin Alexander Smith here.

A. Lange & Söhne Datograph Perpetual Tourbillon Reviewed by Tim Mosso: A Machine with Heart and Soul Quill & Pad
A. Lange & Sohne Jul 23, 2025

A. Lange & Söhne Datograph Perpetual Tourbillon Reviewed by Tim Mosso: A Machine with Heart and Soul

The A. Lange & Söhne Datograph Perpetual Tourbillon lives up to its name. It has a date, a chronograph, a perpetual calendar, and a tourbillon. But it has more: this watch has character. Assigning human traits to a cold machine is a – romantic – fool’s errand, but it’s also irresistible in the presence of a masterpiece. A. Lange & Söhne’s warmest watch is more than a machine with a heartbeat. It has soul.

Bulgari “Beyond Time” Exhibition and a Singapore-Exclusive Octo Worldtimer SJX Watches
Bulgari Beyond Time” Exhibition Jul 23, 2025

Bulgari “Beyond Time” Exhibition and a Singapore-Exclusive Octo Worldtimer

Bulgari has just opened Beyond Time in Singapore, which takes place in Paragon Mall from July 18 to August 10, 2025 and is open to the public daily. An exhibition dedicated to the brand’s watches and jewelled timepieces, Beyond Time also marks the launch of the Octo Roma Worldtimer SG60, a limited edition only for Singapore. The exhibition includes the record setting Octo Finissimo complications – some of the thinnest wristwatches ever made – as well as a watchmaking “masterclass” led by a watchmaker from Bulgari’s Neuchâtel manufacture. Singapore National Day The event coincides with Singapore’s 60th year of independence on August 9. For the occasion, Bulgari has created the Octo Roma Worldtimer SG60, a limited edition accented in white and red, the national colours of Singapore, with a case in black DLC-coated steel. Other goodies specific to Singapore’s National Day weekend include postcards by Singaporean artists, and personalised poetry verses. The Octo Roma Worldtimer SG60 is delivered on a pair of straps in red and black Located on the ground floor of the mall, the B-shaped exhibition space is inspired by the work of German architect Mies van der Rohe and his close collaborator, designer Lilly Reich. The exhibits are organised thematically, with the Serpenti and Octo collections each having a space of their own, but the complicated watches are the centrepiece. The complicated watch display showcases the brand’s accomplishments in pushing the bound...

SJX Podcast: Are Watches Too Expensive? And Discussing Bundling. SJX Watches
Vacheron Constantin Tribute Jul 21, 2025

SJX Podcast: Are Watches Too Expensive? And Discussing Bundling.

This week’s podcast starts with two hot topics – retail prices of watches and “bundling”, or having to buy one watch (or several) in order to get something desirable. The episode also includes several watches we covered recently, including the Vacheron Constantin “Tribute to the Celestial” and the Louis Vuitton Tambour Taiko Spin Time. Listen on Apple Podcasts, Spotify, and YouTube.  

Catching Up on New Releases from Ming, Wren, Squale, and Doxa Worn & Wound
Doxa Happy Saturday! Dive watch Jul 19, 2025

Catching Up on New Releases from Ming, Wren, Squale, and Doxa

Happy Saturday! Dive watch summer continues – we’ve noticed some fun new divers, all limited editions, come across the transom lately. New water ready releases from Doxa, Wren, and Doxa are profiled below. We’re also spotlight the latest from Ming – while not a diver, it has a stealthiness to it that feels appropriate for the season. Let us know in the comments what you think of these new releases, and what we might have missed. Wren Diver 38 Wren is back with their second watch, the all new Diver 38. The brand, founded by Wrist Enthusiast’s Craig Karger, launched last year with the Diver One, and the new piece is a scaled down, and perhaps more refined take on the original concept. The new version of the watch is smaller, coming in at, you guessed it, 38mm, and is just 10.7mm tall (the original was 41mm in diameter and over 13mm thick). The dial has a sandwich style design, in either a gradient seafoam green or aqua colorway. According to Karger, the goal here was to move Wren into a new category that “balances practicality, comfort, and refined execution.”  The Wren Diver 38 is available in date and no-date versions for $1,595. It runs on a ETA  2892 automatic caliber, and has 200 meters of water resistance. It’s mounted to a flat-link, stainless steel bracelet, and the ceramic bezel insert is fully lumed. Another nice touch: the rotor is skeletonized in the shape of a wren. More information on the Wren Diver 38 can be found on the Wren website here. Mi...

Fratello Summer Watch Picks 2025: Jorg’s Favorites From Tudor, Laventure, Nomos, And Rolex Fratello
Tudor Laventure Nomos Jul 17, 2025

Fratello Summer Watch Picks 2025: Jorg’s Favorites From Tudor, Laventure, Nomos, And Rolex

In the last installment of our series on our favorite summer watches, Robert-Jan took a slightly different approach that I loved. Connecting watches to destinations made it more personal. Additionally, it sparked a lively discussion on a variety of topics in the comments. But my brain is also wired similarly to his. Whenever I think […] Visit Fratello Summer Watch Picks 2025: Jorg’s Favorites From Tudor, Laventure, Nomos, And Rolex to read the full article.

Insight: Hairspring Materials and Evolution Part I SJX Watches
Casio n Jul 11, 2025

Insight: Hairspring Materials and Evolution Part I

The invention of the hairspring was among the greatest breakthroughs in horology, since its inception suddenly made mechanical timepieces portable, transforming clocks into watches. This not only marked the start of precision timekeeping, but also set mankind upon the long road to perfecting the accuracy of mechanical watches, arguably the most sophisticated pieces of kit on Earth at the time, when such precision was paramount for fields as varied as navigation, warfare, and astronomy. The hairspring turned 350 years old in 2025 and we’re marking the occasion with a series of stories on the topic, including the story of the spiral hairspring and also the importance and evolution of the overcoil. Now we turn to temperature compensation and metallurgy in a two-part story covering the evolution of the hairspring materials up until metal alloys. More exotic materials and inventions will follow in Part II. Elasticity and thermal expandability  One of the fundamental factors in hairspring function is ambient temperature, simply because metal alloys expand or contract uni-directionally with a change in temperature. As a result, watchmakers used calorimetry, the science of temperature effects, and material science, specifically metal alloys, to their gain in advancing hairspring technology. The equation below shows the relation between the initial length of a metal strip L0, measured at a given temperature and the final length LT after a certain change in temperature.  The equ...

Fratello’s Top 5 Chronograph Watches Of The First Half Of 2025 - Featuring Patek Philippe, Singer, Grand Seiko, And More Fratello
Patek Philippe Singer Grand Seiko Jul 11, 2025

Fratello’s Top 5 Chronograph Watches Of The First Half Of 2025 - Featuring Patek Philippe, Singer, Grand Seiko, And More

It’s Friday again. Then Saturday, Sunday, what? If you recognize this, you know your music. It’s also a nice cue for our next list article with the best watches of the first half of 2025. This week, we’re focusing on our five favorite chronograph watches that came out in the past six months. Some of […] Visit Fratello’s Top 5 Chronograph Watches Of The First Half Of 2025 - Featuring Patek Philippe, Singer, Grand Seiko, And More to read the full article.

SJX Podcast: Urban Jürgensen’s Revival, Breguet’s Birthday, and Spring Auctions SJX Watches
Breguet s Birthday Jul 8, 2025

SJX Podcast: Urban Jürgensen’s Revival, Breguet’s Birthday, and Spring Auctions

SJX and Brandon Moore kick off episode seven of the SJX Podcast with the relaunch of Urban Jürgensen (which includes a tribute to Derek Pratt’s Oval pocket watch), discussing why this time might be different. Also on the docket is a recap of the spring auction season, which included strong prices for hot names in independent watchmaking, though other “indies” waned, surprising showings from hitherto esoteric clocks and pocket watches, and some value buys with out-of-vogue timepieces. Lastly, we recap Breguet’s 250th anniversary launches so far, which have met with a mixed reception, but demonstrate signs of life for a historic brand. Listen on Apple Podcasts, Spotify, and YouTube.  

Introducing: The Ressence Limited Art Watch Type 8 × Daniel Engelberg Fratello
Ressence Limited Art Watch Type Jun 24, 2025

Introducing: The Ressence Limited Art Watch Type 8 × Daniel Engelberg

We all know Benoît Mintiens, founder of Ressence, doesn’t shy away from using multiple colors on his user-friendly spherical watches. The brand’s minimalist Type 8, however, has always had a more modest, single-color design - until now. In collaboration with German painter and sculptor Daniel Engelberg, Ressence presents us with the Type 8 DE1 in […] Visit Introducing: The Ressence Limited Art Watch Type 8 × Daniel Engelberg to read the full article.

The Lanco Alarm: Appreciating Langendorf’s Innovative and Overlooked Single-Crowned Mechanical Alarm Worn & Wound
Jaeger-LeCoultre Poljot Girard-Perregaux Citizen Bulova Jun 17, 2025

The Lanco Alarm: Appreciating Langendorf’s Innovative and Overlooked Single-Crowned Mechanical Alarm

It’s no secret that the visuals of a watch are often why collectors pull the trigger on adding yet another piece to their collection. It could be a specific color, the inclusion of a certain desirable bezel insert, the symmetry of a double register chronograph, or many other aesthetic reasons. This isn’t to say that the movement and build quality are not also a part of this decision-making process, but one of the chief reasons many of us love to collect is for the joy we feel putting one on wrist, potentially matching it with an outfit, and gawking at it throughout our busy days. What I wish to do here is move away from this mindset and instead appreciate how mechanical ingenuity can produce the same amount of excitement and allure. This Lanco Alarm watch may seem relatively lackluster at first glance. A simplistic silver case and dial with very few flashy or notable design choices, it could be easily mistaken for dozens of watches and brands who sold timepieces in the 1960s and 70s. Its most interesting characteristic is perhaps what’s most unremarkable on any other vintage dress piece: the use of a single crown.  By the 1960s, brands like Vulcain, Jaeger-LeCoultre, Poljot, Girard-Perregaux, Citizen, Bulova, and Helbros had released their own alarm watches, many of which utilized movements made by outside movement manufactures like A. Schild and Venus. The common denominator between these models and movements was the two crown layout: one typically adjusted and wou...

Louis Erard and Konstantin Chaykin Unveil a Third Round of their “Time Eater” Collaboration Worn & Wound
Louis Erard Jun 16, 2025

Louis Erard and Konstantin Chaykin Unveil a Third Round of their “Time Eater” Collaboration

Louis Erard and Konstantin Chaykin, the only Russian member of the AHCI, have teamed up once again for a new batch of their hit “Time Eater” collaboration. It’s been about two years since their first collaboration, which was an immediate hit for both parties and sold out quickly. A follow up limited edition came a few months later, this one much darker in tone, both in terms of the dial and case, and also the mood of the piece- that bloodshot eye really leaves an impression. For their third release, Chaykin and Louis Erard have returned to their original idea, offering a pair of watches that fans of the original who might have missed out will likely be quite interested in taking a look at when they go on sale in a few days.  The fact that this collaboration exists at all is one of the things we like most about Louis Erard as a brand. They’ve really found a niche in developing limited edition projects with interesting collaborators both in and outside of the watch industry. A watchmaker like Konstantin Chaykin, who has risen to prominence in recent years with his “Wristmons” series of watches, makes watches that are likely out of reach for most collectors. But through Louis Erard, Chaykin, along with watchmakers like Stefan Kudoke and Vianney Halter, brings his design ethos down to earth, making it approachable to enthusiasts who admire his work but would never be able to spend tens of thousands on a single piece. Together with Louis Erard, Chaykin has essentia...

Introducing – The New Ressence TYPE 9 S75 to Celebrate Ahmed Seddiqi’s 75 Years Monochrome
Ressence TYPE 9 S75 Jun 16, 2025

Introducing – The New Ressence TYPE 9 S75 to Celebrate Ahmed Seddiqi’s 75 Years

Ressence’s partnership with Ahmed Seddiqi & Sons, UAE’s leading watch and jewellery retailer, has produced a series of limited editions over the years, each celebrating local heritage through innovative design. From the Type 1 DXB with its Arabesque-inspired grid motif to the Type 1 Slim DX2, and the Type 1 DX3 featuring traditional Girih geometric […]

Introducing: The Ressence Type 9 S75 - A Sand-Dial Limited Edition Celebrating Ahmed Seddiqi’s 75th Anniversary Fratello
Ressence Type 9 S75 - Jun 16, 2025

Introducing: The Ressence Type 9 S75 - A Sand-Dial Limited Edition Celebrating Ahmed Seddiqi’s 75th Anniversary

Benoît Mintiens of Ressence and Ahmed Seddiqi, a luxury watch and jewelry retailer in the United Arab Emirates (UAE), are back with another limited edition. This time, they used the fairly new Ressence Type 9 as their canvas and added a unique touch: the domed titanium dial is completely covered with sand. It’s not just […] Visit Introducing: The Ressence Type 9 S75 - A Sand-Dial Limited Edition Celebrating Ahmed Seddiqi’s 75th Anniversary to read the full article.

Introducing: The IWC Pilot’s Watch Automatic 41 Top Gun Lake Tahoe And Mojave Desert Will Take You Places Fratello
IWC Pilot’s Watch Automatic 41 Jun 9, 2025

Introducing: The IWC Pilot’s Watch Automatic 41 Top Gun Lake Tahoe And Mojave Desert Will Take You Places

Most Fratello readers saw Top Gun, right? And something tells me most of you have also seen Top Gun: Maverick. Something also tells me that all who have seen those action-packed movies wanted to be Maverick or Iceman. Who wouldn’t want to fire the afterburners and just send their F-14 Tomcat? With a cool pilot’s […] Visit Introducing: The IWC Pilot’s Watch Automatic 41 Top Gun Lake Tahoe And Mojave Desert Will Take You Places to read the full article.

Hands-On: Suspend Your Purism And Enjoy Two New Colors Of The Hamilton Khaki Field Auto 38mm Fratello
Hamilton Khaki Field Auto 38mm Jun 7, 2025

Hands-On: Suspend Your Purism And Enjoy Two New Colors Of The Hamilton Khaki Field Auto 38mm

The Hamilton Khaki Field Auto has been a gateway watch for many seasoned collectors. It is also one of those rare watches that serve that role without owners “growing” out of it. You’ll find it sitting proudly among Rolexes and Omegas, holding its own in so many enthusiasts’ collections. Today, we get two new colorways, […] Visit Hands-On: Suspend Your Purism And Enjoy Two New Colors Of The Hamilton Khaki Field Auto 38mm to read the full article.

Introducing: The New Breguet Type XX Chronographe 2075 Watches Fratello
Breguet Type XX Chronographe 2075 Jun 5, 2025

Introducing: The New Breguet Type XX Chronographe 2075 Watches

I wrote a lengthy review on the stainless steel Type XX Chronographe 2067 late last year. You can find (and read) it here. If you want to skip to the conclusion, I ended that review with the following paragraph: “I hope Breguet will introduce more variations of the modern Type XX that are closer to […] Visit Introducing: The New Breguet Type XX Chronographe 2075 Watches to read the full article.

Visiting The 6 Hours Of Spa-Francorchamps And A Talk With Tom “Mr. Le Mans” Kristensen Fratello
Rolex invited me May 29, 2025

Visiting The 6 Hours Of Spa-Francorchamps And A Talk With Tom “Mr. Le Mans” Kristensen

A few weeks ago, Rolex invited me to attend the World Endurance Championships 6 Hours of Spa-Francorchamps. This series, which also includes the famous 24 Hours of Le Mans, took place on May 10th in Belgium. Hypercars and GT3 racing cars compete for six hours at this beautiful track. This year’s winning car was a […] Visit Visiting The 6 Hours Of Spa-Francorchamps And A Talk With Tom “Mr. Le Mans” Kristensen to read the full article.

Introducing: The Smaller Seiko Presage SPB521, SPB523, And SPB524 Fratello
Seiko Presage SPB521 SPB523 May 21, 2025

Introducing: The Smaller Seiko Presage SPB521, SPB523, And SPB524

The Seiko Presage collection is often overlooked but without good reason. I have a major soft spot for the Cocktail Time series that combines the fun of Tokyo bar culture with some seriously stylish timepieces. There’s also the relatively new Presage Classic series. It uses traditional Japanese colors, materials, and textures to develop a creative […] Visit Introducing: The Smaller Seiko Presage SPB521, SPB523, And SPB524 to read the full article.

SJX Podcast: Geneva Auctions and Breguet SJX Watches
Christopher Ward s daring new C12 May 6, 2025

SJX Podcast: Geneva Auctions and Breguet

In the fifth episode of the SJX Podcast, Brandon Moore and SJX discuss Breguet’s reinterpretation of the Souscription for its 250th anniversary, as well as a historical Breguet watches coming up for auction, including a pocket watch owned by Napoleon’s sister and the very first modern-day Breguet Sympathique. We also talk about Christopher Ward’s daring new C12 with a dial-side balance wheel and very contemporary styling, before moving on to antique watches and clocks coming up for auction at Phillips in Geneva, including a 1920s portico mystery clock by Cartier in the “orientalist” style. Lastly, we finish some complicated pocket watches, which are perhaps under appreciated but magnificent examples of horology. Listen on Apple Podcasts, Spotify, and YouTube.