A Complete Guide to Seiko Nicknames: 30 Names Every Watch Collector Should Know
If you’ve spent any time around watch enthusiasts, you’ve probably heard someone talking about a Turtle, Tuna, Willard, Samurai, or Snowflake without ever mentioning a reference number. Unlike many watch brands that rely on memorable model names, Seiko has developed one of the richest collections of community-created nicknames in horology.
These Seiko nicknames have become part of the language of collecting. They make it easier to identify specific references, celebrate the history behind iconic models, and distinguish between the countless Seiko watches that have been produced over the decades. Some names come from famous movie appearances, others from case shapes, bezel designs, or dial textures, while a few have origins that remain something of a mystery.
Whether you’re shopping for your first Seiko automatic, researching vintage Seiko models, or simply curious about the stories behind some of the most famous Seiko watches, we put together this guide to the best-known Seiko watch nicknames.
Why Do Seiko Watches Have Nicknames?
Unlike other brands, Seiko often identifies its watches primarily by reference numbers rather than memorable model names. References like SPB143, SKX007, or 6105-8110 don’t exactly roll off the tongue.
Over time, collectors began inventing their own names based on a watch’s appearance, history, unique features, or famous owners. Today, many of these Seiko watch names are far better known than the official references themselves. In fact, walk into almost any enthusiast gathering and you’re far more likely to hear someone mention a Turtle than an SRPE93.
1. ‘Arnie’
The Seiko H558-5009 will forever be affectionately known as the “Arnie” thanks to none other than Arnold Schwarzenegger. Long before becoming Governor of California, Schwarzenegger wore this rugged analog-digital diver in both Commando (1985) and Predator (1987), instantly cementing its place in watch history.
With its oversized case and hybrid display, it looked perfectly at home on the wrist of Hollywood’s biggest action star.
In 2019, Seiko revived the legend with the Prospex SNJ025. While larger than the original at nearly 48mm, it faithfully captured the spirit of the classic and introduced a new generation of collectors to one of Seiko’s most recognizable nicknames.
2. ‘Captain Willard’
Few watches owe their fame to cinema quite like the Captain Willard.
Martin Sheen famously wore the Seiko 6105-8110 while portraying Captain Benjamin L. Willard in Apocalypse Now. Its asymmetrical cushion case, offset crown, and unmistakable silhouette made it an icon among military and dive watch enthusiasts alike.
Modern recreations such as the SLA033, SPB151, and SPB153 have continued the legacy, making the Willard one of the most desirable automatic dive watches Seiko has ever produced.
3. ‘Seitona’
When Seiko introduced the Prospex Speedtimer Solar Chronograph collection in 2021, enthusiasts immediately noticed something familiar.
The white-dial SSC813 closely resembled the layout of the Rolex Daytona, earning it the playful nickname “Seitona.”
Despite the comparison, the watch has earned its own reputation thanks to its solar-powered movement, compact proportions, and excellent value. Today it’s considered one of the best entry-level chronograph watches available.
4. ‘Ashtray’
Among Seiko collectors, the “Ashtray” refers to the rugged 7C46-6009 and 7C46-6010 professional quartz divers from the 1980s.
The nickname comes from the unusually deep grooves cut into the bezel, which resemble the cigarette ashtrays commonly found decades ago. Love the nickname or hate it, these titanium divers remain cult favorites among vintage Seiko enthusiasts.
5. ‘Atlas’ (or ‘Landshark’)
The Seiko 5 Sports SKZ211 carries two nicknames.
The “Atlas” comes from its internal rotating compass bezel, while “Landshark” reflects its ability to transition effortlessly between outdoor adventures and underwater exploration thanks to its 200-meter water resistance.
It’s one of Seiko’s more unusual designs and remains surprisingly popular years after production ended.
6. ‘UFO’ (or ‘Yachtsman’)
The Seiko 6138-001X automatic chronograph from the 1970s is affectionately known as the “UFO” because of its rounded, saucer-like case with virtually no visible lugs.
Collectors also sometimes call it the “Yachtsman,” after the name used in an American Seiko advertisement from the era.
7. ‘Monster’
The Monster hardly needs an introduction.
Oversized hands, aggressive indices, exceptional lume, and a bold bezel design combine to create one of the most instantly recognizable Seiko automatic divers ever produced.
Since its debut, the Monster has gone through several generations, spawning countless variations including the Orange Monster, Black Monster, Green Monster, and Blue Monster. No matter the color, the name fits perfectly.
8. ‘Tuna’
Perhaps no Seiko nickname is more iconic than the Tuna.
Originally introduced in 1975 with the legendary 6159-7010 reference, often called the “Grandfather Tuna,” its massive protective shroud gave the watch the appearance of a tuna can.
Despite measuring close to 48mm, the lugless case wears surprisingly comfortably thanks to its short footprint.
The Tuna family has since expanded into numerous variations including the Darth Tuna, Golden Tuna, Baby Tuna, and Solar Tuna, making it one of the most celebrated dive watch families in Seiko’s history.
9. ‘Turtle’
If there’s one Seiko that defines affordable dive watches, it’s the Turtle.
Its nickname comes from the rounded cushion case, which resembles a turtle shell when viewed from above, and even more so when flipped over.
Originally introduced in the 1970s and revived decades later due to overwhelming demand, the Turtle has become one of the most beloved and accessible professional-style divers on the market.
Modern versions frequently rank among the best Seiko watches for enthusiasts looking for an everyday automatic diver.
10. ‘King Turtle’
Building on the success of the Turtle, Seiko introduced premium versions featuring sapphire crystals and ceramic bezel inserts.
Collectors quickly dubbed them the “King Turtle.”
These upgraded models retain everything enthusiasts love about the original while adding modern durability and refinement.
11. ‘Slim Turtle’
The SPB317 and related models earned the nickname “Slim Turtle” thanks to their noticeably thinner profile.
While they preserve the unmistakable Turtle silhouette, the reduced thickness makes them one of the easiest Prospex divers to wear daily.
12. ‘Mohawk’
The Mohawk is one of Seiko’s more polarizing designs.
Its raised 0-20 section of the bezel resembles a mohawk haircut while also providing extra grip for divers wearing gloves.
Some collectors love its quirky personality. Others remain unconvinced. Either way, the nickname has stuck.
13. ‘Spork’
The discontinued SRP043K1 became known as the “Spork” because it blends characteristics of both pilot and dive watches.
Like the utensil itself, it’s a hybrid, not to mention one of Seiko’s quirkiest creations.
Its distinctive 3-6-9-12 dial layout and versatile styling have earned it a loyal following years after production ceased.
14. ‘Pogue’
Named after Colonel William Pogue, who wore his Seiko 6139-6005 during NASA’s Skylab 4 mission, the Pogue occupies a special place in spaceflight history.
Not only was it one of the first automatic chronographs worn in space, but it also remains one of the most collectible vintage Seiko watches ever produced.
15. ‘Shogun’
Introduced in 2008, the Seiko SBDC007 (black dial) and SBDC009 (orange dial) became known as the “Shogun” because collectors felt their sharp, angular case, deeply notched bezel, and arrow-shaped bracelet links resembled the armor of a Japanese shogun. Seiko’s own designers later acknowledged the nickname, pointing to the watch’s armor-like case, bezel, and bracelet details as fitting inspiration.
Despite its commanding appearance, the Shogun is crafted from lightweight hardened titanium, making it one of the most comfortable full-size dive watches in the Prospex lineup and a longtime cult favorite among enthusiasts.
16. ‘Sumo’
The Seiko SBDC001 and SBDC003 became known as the “Sumo” because collectors thought the watch’s broad, rounded case, thick lugs, and chunky hands resembled the powerful build of a sumo wrestler. The nickname was never official, but it became so widely adopted that even Seiko has acknowledged it in interviews and design discussions.
With its flowing case lines, oversized bezel numerals, and exceptional comfort despite its size, the Sumo has earned legendary status as one of the best-value professional dive watches in the Prospex lineup.
17. ‘Sea Urchin’
The Seiko SNZF17 (black bezel) and SNZF15 (Pepsi bezel) are affectionately known as the “Sea Urchin.” While the exact origin of the nickname has never been confirmed, most enthusiasts believe it refers to the long, “spiky” minute markers on the first 15 minutes of the bezel, which resemble the spines of a sea urchin.
Part of the Seiko 5 Sports collection, the Sea Urchin has become a gateway watch for countless collectors thanks to its dependable automatic movement, versatile Submariner-inspired design, and exceptional value. For many enthusiasts, it represents the first step into the world of mechanical Japanese watches.
18. ‘Samurai’
The original Seiko SBDA001 and SBDA003 earned the nickname “Samurai” because enthusiasts felt their sharply faceted case, sword-like hands, and angular design evoked the armor and weapons of a Japanese samurai.
Although the nickname was coined by collectors rather than Seiko itself, the company’s designers later acknowledged the comparison, pointing to the sliced case surfaces, blade-shaped hour markers, sword-inspired bezel knurling, and armor-like profile as the inspiration behind the watch’s distinctive appearance.
Originally released for the Japanese domestic market in 2004, the Samurai quickly became one of Seiko’s most recognizable dive watches, with later models like the SRPB51 and numerous Save the Ocean editions carrying on its legacy.
19. ‘King Samurai’
The King Samurai is the premium evolution of the Samurai series, with early references including the SRPE33 and SRPE35. The “King” designation is Seiko’s own naming convention for upgraded versions of existing Prospex models, indicating premium features rather than a different case design.
Like the King Turtle, the King Samurai enhances the standard formula with a scratch-resistant sapphire crystal, ceramic bezel insert, and a magnified date window, while retaining the sharp, angular case and sword-inspired styling that made the original Samurai a favorite. For collectors, it offers the Samurai’s distinctive design with a more refined specification straight from the factory.
20. ‘Mini Turtle’
The Mini Turtle takes its name from its close resemblance to the iconic Turtle, shrinking the signature cushion-shaped case into a more wearable 42.3 mm format. Early references such as the SBDY083 and SBDY085 retain the rounded case profile that inspired the original Turtle nickname, while offering improved comfort for smaller wrists.
Although not an official nickname, “Mini Turtle” was quickly adopted by enthusiasts to distinguish these compact models from their full-size counterparts. For collectors who love the Turtle’s unmistakable silhouette but prefer a more versatile fit, the Mini Turtle strikes an ideal balance between heritage and everyday wear.
21. ‘Ripley’
The Seiko 7A28-7000 earned the nickname “Ripley” after it was worn by Ellen Ripley, portrayed by Sigourney Weaver, in the 1986 film Aliens.
Designed by legendary Italian industrial designer Giorgetto Giugiaro, its asymmetrical “driver’s” chronograph layout and futuristic styling made it a perfect fit for the film’s sci-fi aesthetic.
Although originally released before Aliens hit theaters, the watch became inseparable from Ripley’s character, and the nickname has endured ever since. Seiko later paid tribute with reissues such as the SCED035, introducing a new generation of enthusiasts to one of the brand’s most unconventional and collectible designs.
22. ‘Stargate’
The Seiko SRP493 and SRP495 became known as the “Stargate” because collectors felt the watch’s deeply scalloped, geometric bezel resembled the circular portal from the Stargate science-fiction franchise. This nickname, too, was coined by enthusiasts rather than Seiko, but it quickly caught on within the community thanks to the bezel’s unmistakable appearance.
Beyond its distinctive look, the aggressively machined bezel also provides exceptional grip, making the Stargate as practical underwater as it is recognizable on the wrist. Produced as part of the Seiko 5 Sports line, it has become one of the more sought-after modern Seiko nicknames among collectors.
23. ‘Bottle Cap’
The Bottle Cap gets its name from its deeply notched bezel, which closely resembles the underside of a metal bottle cap.
The SRPC68 “Root Beer” remains one of the most distinctive examples and has developed a dedicated following among collectors who appreciate Seiko’s more unconventional designs.
24. ‘Starfish’
The Seiko SRP773 and SRP775 are commonly nicknamed the “Starfish” because collectors felt the six broad scallops of the bezel resemble the arms of a starfish. The name quickly became the accepted way to distinguish this generation of Seiko 5 Sports divers.
Along with its distinctive bezel, the Starfish is appreciated for its robust case, dependable automatic movement, and Seiko’s renowned Lumibrite, earning it a loyal following among collectors looking for an affordable everyday diver.
25. ‘Alpinist’
Unlike many entries on this list, Alpinist actually began as an official model name before evolving into shorthand used by collectors.
Originally introduced in 1959 for Japanese mountain climbers, the Alpinist has become one of Seiko’s most beloved field watch collections.
Modern references such as the SPB121 feature cathedral hands, an internal compass bezel, and the iconic green dial that has made the Alpinist a favorite well beyond hiking trails.
26. ‘Baby Alpinist’
Collectors coined the name “Baby Alpinist” for references like the SPB155 and SPB157.
These models retain much of the classic Alpinist aesthetic while removing the internal compass bezel, resulting in a cleaner everyday sports watch that has become increasingly popular in recent years.
27. ‘Marinemaster’ (MM300)
Although “Marinemaster” is an official model name, enthusiasts often shorten it to simply “MM300.”
Professional divers like the SBDX001 and its successors are widely regarded as some of the finest Seiko automatic dive watches ever produced thanks to their monobloc cases, exceptional finishing, and robust mechanical movements.
For many collectors, the MM300 sits near the top of Seiko’s modern lineup.
Grand Seiko Nicknames
While Grand Seiko models are generally known by their reference numbers, collectors have still given several standout models memorable nicknames inspired by nature.
28. ‘Snowflake’
Arguably the most famous of all Grand Seiko nicknames, the Snowflake (SBGA211) takes its name from its beautifully textured white dial, inspired by freshly fallen snow surrounding Grand Seiko’s Shinshu Studio.
It has become the watch that introduced countless enthusiasts to Grand Seiko and remains one of the best Grand Seiko watches ever made.
29. ‘White Birch’
The White Birch (SLGH005) features one of the most intricate dials Grand Seiko has produced, inspired by the birch forests surrounding the Shizukuishi Studio.
Combined with the high-beat 9SA5 movement, it has quickly become another modern icon within the collection.
30. ‘Shunbun’
Named after Japan’s spring equinox, the Shunbun (SBGA413) is famous for its subtle pink dial inspired by cherry blossoms.
Its understated elegance has made it one of the most sought-after modern Grand Seiko releases.
What Are the Best Seiko Watches?
Ask ten collectors this question and you’ll probably get ten different answers, but a few models appear on almost every list.
Among the best Seiko watches are the Turtle, Captain Willard, Tuna, Monster, Alpinist, Marinemaster, Samurai, Sumo, Speedtimer, and Pogue. If you’re looking beyond the Prospex collection, Grand Seiko’s Snowflake and White Birch are widely considered two of the finest luxury Japanese watches ever produced.
Ultimately, the best Seiko is the one that suits your wrist, your style, and the type of collecting you enjoy.
Final Thoughts
From the legendary Turtle and Willard to the modern Slim Turtle, King Samurai, and Grand Seiko Snowflake, Seiko has produced some of the most recognizable watches in the industry. These nicknames weren’t created by Seiko’s marketing department, They were earned through decades of enthusiast appreciation, memorable designs, famous appearances, and unforgettable personalities.
Whether you’re buying your first Seiko automatic, researching vintage Seiko references, or simply learning the language of collectors, understanding these Seiko nicknames makes exploring the brand far more enjoyable. And as Seiko continues to release new models, there’s little doubt that future classics will earn memorable nicknames of their own.
Did we miss any? Let us know below!
