Grand Seiko Tentagraph Snow Blue Ref. SLGC007
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Grand Seiko Unveils the New Spring Drive Calibre 9RB2 at Watches & Wonders 2025

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Every edition of Watches and Wonders brings exciting new releases, but few brands create as much excitement as Grand Seiko. Known for combining centuries of Japanese craftsmanship with the latest technology, the company has earned a reputation for constantly improving mechanical accuracy. This year, Grand Seiko revealed the new Spring Drive Calibre 9RB2—a movement that introduces the Ultra Fine Accuracy (U.F.A.) label and sets a new standard for precision in mainspring-powered wristwatches.

More than a new movement, the Spring Drive Calibre 9RB2 marks the next step in Grand Seiko’s quest for accuracy, innovation, and quality. Offering an annual accuracy of ±20 seconds, it is the brand’s most precise Spring Drive movement to date. This underscores why Grand Seiko is one of the industry’s true innovators. Whether you are a seasoned collector or discovering luxury watchmaking for the first time, this release deserves your attention.

Grand Seiko Calibre 9RB2
Grand Seiko Calibre 9RB2 | Image: Grand Seiko

Grand Seiko Calibre 9RB2

  • Brand: Grand Seiko
  • Model: Calibre 9RB2
  • Diameter: 30 mm
  • Thickness: 5.02 mm
  • Winding Mechanism: Automatic With Manual Winding
  • Accuracy: ±20 Seconds Per Year (±3 Second Per Month)
  • Number Of Jewels: 34 Jewels
  • Power Reserve: 72 Hours

The Spring Drive Calibre 9RB2 debuted at Watches and Wonders 2025, introducing what Grand Seiko calls Ultra Fine Accuracy (U.F.A.). Delivering an astonishing ±20-second annual accuracy, it sets a new benchmark as the most accurate mainspring-powered wristwatch movement ever created. Achieving this remarkable level of precision required a complete rethink of the brand’s three-month-aged quartz oscillator, a newly developed temperature-compensating integrated circuit, and, for the first time in a Spring Drive movement, a regulation switch that allows watchmakers to fine-tune the calibre during servicing.

The Calibre 9RB2 debuts inside two new Evolution 9 Collection timepieces: the SLGB001 in Platinum 950 and the SLGB003 in High-Intensity Titanium. Both feature Grand Seiko’s striking Ice Forest dial, inspired by the frost-covered woodlands surrounding the Shinshu Watch Studio, where every Spring Drive watch is meticulously crafted.

Beyond its incredible accuracy, the movement offers a 72-hour power reserve, 34 jewels, and a compact 30 mm architecture that allows Grand Seiko to create smaller, more wearable cases without compromising performance. Combined with the brand’s Offset Magic Lever winding system and robust One-piece Center Bridge construction, the Calibre 9RB2 is another demonstration of Grand Seiko’s ability to blend traditional Japanese craftsmanship with cutting-edge engineering.

Grand Seiko Evolution 9 Collection Ice Forest - 65th Anniversary Limited Edition Ref. SLGB001
Grand Seiko Evolution 9 Collection Ice Forest – 65th Anniversary Limited Edition | Image: Grand Seiko

SLGB001 – Ice Forest (65th Anniversary Limited Edition)

  • Brand: Grand Seiko
  • Model: Evolution 9 Ice Forest — 65th Anniversary Limited Edition
  • Reference: SLGB001
  • Diameter: 37 mm
  • Thickness: 11.4 mm
  • Material: Platinum
  • Dial Colour: Ice Forest
  • Calibre:  Calibre 9RB2
  • Power Reserve: 72 Hours
  • Water Resistance: 10 Bar (100 metres, 330 feet)
  • Price: USD $39,000 (Limited Edition – 80 Pieces)

To celebrate 65 years of Grand Seiko, the brand introduced the SLGB001, a limited edition of 80 pieces made from Platinum 950. Besides debuting the revolutionary Spring Drive Calibre 9RB2, the watch honors the natural beauty around the Shinshu Watch Studio, where every Spring Drive timepiece is meticulously assembled.

Its striking Ice Forest dial draws inspiration from the frost-covered forests of the Kirigamine Highlands in winter. Delicate blue tones and a textured pattern recreate ice clinging to the trees. Tempered blue hands and diamond-cut indexes enhance legibility and elegance. The 37 mm Platinum 950 Evolution 9 case is paired with a crocodile leather strap. Limited to only 80 worldwide, the SLGB001 blends Grand Seiko’s signature Japanese aesthetics with the highest level of mechanical innovation.

Grand Seiko Evolution 9 Ice Forest Collection Ref. SLGB003G
Grand Seiko Evolution 9 Ice Forest Collection | Image: Grand Seiko

SLGB003 – Ice Forest

  • Brand: Grand Seiko
  • Model: Evolution 9 Ice Forest
  • Reference: SLGB003
  • Diameter: 37 mm
  • Thickness: 11.4 mm
  • Material: High-Intensity Titanium
  • Dial Colour: silver-tinged blue hue
  • Calibre:  Calibre 9RB2
  • Power Reserve: 72 Hours
  • Water Resistance: 10 Bar (100 metres, 330 feet)
  • Price: USD $10,900

Alongside the platinum limited edition, Grand Seiko also introduced the SLGB003, a regular-production model that brings the groundbreaking Spring Drive Calibre 9RB2 to a wider audience. Crafted from High-Intensity Titanium, the 37 mm timepiece delivers the same industry-leading ±20 seconds per year accuracy while offering a noticeably lighter and more comfortable wearing experience. The titanium case and bracelet are around 30% lighter than stainless steel, yet provide enhanced scratch and corrosion resistance for everyday wear.

Like its platinum sibling, the SLGB003 features Grand Seiko’s captivating Ice Forest dial, inspired by the frost-covered trees surrounding the Shinshu Watch Studio in Japan’s Kirigamine Highlands. A finely textured silvery-blue finish recreates the shimmering appearance of ice glistening in the winter sunlight, while the tempered blue seconds hand glides effortlessly across the dial—a signature characteristic of every Spring Drive movement.

Besides the impressive movement, the SLGB003 offers several useful upgrades for Grand Seiko fans. It features a new three-step micro-adjustment clasp that lets you adjust the bracelet size in 2 mm increments without tools, making it one of the brand’s easiest-to-wear Evolution 9 models so far.

Grand Seiko Heritage Collection Purple Kiri Ref. SBGW323
Grand Seiko Heritage Collection Purple Kiri | Image: Grand Seiko

SBGW323 – Purple Kiri Flower

  • Brand: Grand Seiko
  • Model: Heritage Collection
  • Reference: SBGW323
  • Diameter: 36.5 mm
  • Thickness: 11.6 mm
  • Material: Stainless Steel
  • Dial Colour: Purple Kiri
  • Calibre:  Calibre 9S64
  • Power Reserve: 72 Hours
  • Water Resistance: 10 Bar (100 metres, 330 feet)
  • Price: USD $5,600

Inspired by the delicate blooms of the purple kiri flower, also known as the Paulownia or “Empress Tree,” the Grand Seiko SBGW323 beautifully captures the essence of spring in Japan. Recognized as the official flower of Iwate Prefecture, where the Grand Seiko Studio Shizukuishi is located, the kiri blooms in soft shades of purple each spring. Its elegant lavender dial is paired with Grand Seiko’s signature Mt. Iwate pressed pattern, recreating the mountain’s distinctive ridges as seen from the studio where every mechanical 9S timepiece is meticulously crafted.

Housed in the iconic 36.5 mm 44GS stainless steel case, the Purple Kiri is powered by the manually wound Calibre 9S64, delivering a 72-hour power reserve and the dependable performance for which Grand Seiko is renowned. With Zaratsu-polished surfaces, razor-sharp facets, and a dial inspired by one of Japan’s most cherished seasonal blooms, the SBGW323 is a graceful addition to the Heritage Collection—proving that exceptional craftsmanship and nature-inspired design can be just as captivating as the brand’s most technically advanced creations.

Grand Seiko Tentagraph Snow Blue Ref. SLGC007
Grand Seiko Tentagraph Snow Blue | Image: Grand Seiko

SLGC007 – Tentagraph Snow Blue

  • Brand: Grand Seiko
  • Model: Evolution 9 Tentagraph Snow Blue
  • Reference: SLGC007
  • Diameter: 43.2 mm
  • Thickness: 15.3 mm
  • Material: High-Intensity Titanium
  • Dial Colour: Snow Blue
  • Calibre:  Calibre 9SC5
  • Power Reserve: 72 Hours
  • Water Resistance: 10 Bar (100 metres, 330 feet)
  • Price: USD $14,100

Inspired by the snow-covered slopes of Mount Iwate in winter, the Grand Seiko Tentograph takes its design from one of Japan’s most beautiful landscapes. Coming out in May 2025, the Purple Kiri features a unique two-layer “Snow Blue” dial that highlights the contrast between fresh snow and the mountain’s rough ridges. The raised Mt. Iwate pattern adds texture and depth to the dial, making it a highlight of this year’s collection.

The inspiration goes beyond the dial. Mount Iwate overlooks the Grand Seiko Studio Shizukuishi, where the brand’s mechanical watches are crafted by hand. While winter reveals the mountain at its most unforgiving, Grand Seiko views it as a reminder to keep moving forward, simply describing its message, “Even if life is rough, we should live with determination.”

Powering the SLGC007 is the Tentagraph Calibre 9SC5, a high-beat automatic chronograph operating at 36,000 vibrations per hour (10 beats per second) with an impressive 72-hour power reserve. Finished in a lightweight 43.2 mm High-Intensity Titanium case with a black ceramic bezel, the watch pairs everyday wearability with Grand Seiko’s signature approach to mechanical watchmaking—combining technical precision with designs rooted in Japan’s natural landscape.

Grand Seiko Tokyo Lion Tentagraph Ref. SLGC009
Grand Seiko Tokyo Lion Tentagraph | Image: Grand Seiko

Tokyo Lion Tentagraph

  • Brand: Grand Seiko
  • Model: Tokyo Lion Tentagraph
  • Reference: SLGC009
  • Diameter: 43 mm
  • Thickness: 15.6 mm
  • Material: Brilliant Hard Titanium
  • Dial Colour: Snow Blue
  • Calibre:  Calibre 9SC5
  • Power Reserve: 72 Hours
  • Water Resistance: 20 Bar (200 metres, 660 feet)
  • Price: USD $16,400

The Tokyo Lion Tentagraph marks a new chapter for Grand Seiko’s Sport Collection, taking one of the brand’s most distinctive designs and pairing it with its first mechanical chronograph movement. Inspired by the lion—a symbol that has represented Grand Seiko since its founding in 1960—the watch embodies the qualities the manufacture has always pursued: precision, durability, and beauty. At Watches and Wonders 2025, the Tokyo Lion evolves with a bolder, more refined design, built for high-performance sports-watch enthusiasts.

Every detail of the watch draws from its namesake, from its sharp, sculpted case features and claw-like lugs and bezel surfaces to the textured dial, which takes inspiration from a lion’s flowing mane. Grand Seiko also redesigned the chronograph pushers to provide a more satisfying tactile feel, and the three-dimensional sub-dials improve legibility by bringing the hands closer to their respective scales.

For the first time in the Sport Collection, Grand Seiko has crafted the case from Brilliant Hard Titanium. Brighter than conventional titanium and offering a surface hardness roughly twice that of standard stainless steel, the alloy provides excellent scratch and corrosion resistance without adding unnecessary weight. The newly developed rubber strap is equally impressive, offering nearly 2.7 times the tensile strength of the brand’s previous silicone straps, while a lion’s paw motif on the underside adds a subtle finishing touch that most owners will only notice when wearing the watch.

Powering the Tokyo Lion Tentagraph is the Calibre 9SC5, Grand Seiko’s first mechanical chronograph movement. Beating at 36,000 vibrations per hour (10 beats per second) and delivering a 72-hour power reserve, it combines a Dual Impulse Escapement, column wheel, and vertical clutch for precise chronograph performance. Every movement undergoes 20 days of testing—three days longer than most Grand Seiko mechanical calibres—to ensure it meets the brand’s exacting standards, even with the chronograph running that has defined Grand Seiko for more than six decades.

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Bungie’s ‘Marathon’— Everything You Need to Know: Characters, Release Date, & More

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For years, Bungie has been one of the biggest names in sci-fi shooters, creating iconic franchises like Halo and Destiny. Now, the studio is taking a new direction with ‘Marathon’, a multiplayer extraction shooter focused on survival, risk, and intense combat. Although the game’s first reveal earlier this year didn’t impress many fans, it has since made a strong comeback. Bungie is now showing off more of the world, gameplay features, and action-packed battles set on Tau Ceti IV.

Bungie has confirmed that ‘Marathon’ is aiming to release in March 2026, though the exact date has not yet been set. The newest videos show that the extra time has made a difference. The game feels more focused now, with a clear style centred on extraction gameplay where staying alive is more important than just getting kills. Players take on the role of cybernetic mercenaries called Runners, who enter dangerous areas to gather loot, fight other teams, and try to escape without losing what they have.

The studio has also confirmed that ‘Marathon’ will be a paid game instead of free-to-play, with Bungie aiming for a $40 price and free updates during the first year. Bungie is avoiding some of the annoying seasonal systems found in many modern multiplayer games, keeping reward passes available all the time rather than making them vanish after short events. Thanks to Bungie’s reputation for great gunplay, the game’s eye-catching art style, and the rising popularity of extraction shooters, ‘Marathon’ is already one of the most talked-about upcoming multiplayer games.

What Is Bungie’s ‘Marathon’?

Long before Halo made Bungie one of the biggest names in gaming, the studio first built its sci-fi reputation through the original Marathon trilogy back in the 1990s. This new version returns to that universe years later, placing players inside a dangerous future shaped by missing colonies, mysterious factions, and a giant interstellar ship hanging silently above a ruined planet.

The game takes place on Tau Ceti IV, a colony where everyone disappeared under unknown circumstances. Players take on the role of Runners, mercenaries who have left their human bodies behind and now use artificial bodies designed for fighting and survival. Working for secret, powerful groups, Runners are sent into dangerous areas to find weapons, upgrades, supplies, and clues about what happened on the planet and on the huge Marathon ship orbiting above.

Marathon is based on PvPvE extraction gameplay, meaning players fight both enemy creatures and other human teams in each match. Players can play alone or team up while exploring different maps across Tau Ceti IV. The further players go into risky areas, the better the rewards, but staying alive long enough to get away is more important than just getting kills. Losing a fight can mean losing valuable gear, loot, and progress gained during the run.

Bungie also seems to focus a lot on long-term progress, letting players improve their Runner, try out different setups, and unlock better gear over time. Along with the game’s clear sci-fi look, intense survival action, and Bungie’s well-known skill with shooting mechanics, Marathon already feels very different from most multiplayer shooters out there.

‘Marathon’ (2026) | Image: Bungie

How Does ‘Marathon’ Play?

‘Marathon’ is based on extraction-style gameplay where staying alive is more important than just getting kills. Players enter large maps on Tau Ceti IV alone or with teammates, looking for weapons, implants, supplies, and valuable items while facing hostile enemies and rival teams at the same time. After gathering enough gear, players must reach an extraction point and escape safely before losing everything. This pressure is present in every match, especially when other teams head toward the same goals and extraction areas.

The shooting in ‘Marathon’ keeps the fast, smooth style Bungie is known for, but the game feels more tense and strategic than Destiny. Winning isn’t just about fighting; positioning, teamwork, movement, and knowing when to leave weigh just as much. Bungie is building the game for long-term progress, so you can customize your Runner, try different gear, and unlock better equipment as you play. Based on what’s been shown so far, ‘Marathon’ is less about constant action and more about those stressful moments when one mistake can end your run.

‘Marathon’ (2026) | Image: Bungie

What Are the Classes and Factions in ‘Marathon’?

One of the most important choices in ‘Marathon’ is picking which Runner Shell to use in a match. Each Shell is designed for a different way of fighting and surviving, so the class you pick can completely change how a run goes. Some are built for tough fights, while others focus more on sneaking, moving quickly, helping teammates, or grabbing valuable gear and escaping unseen.

Here are the Runner Shells Bungie has revealed so far:

Destroyer: A heavy combat Shell equipped with a riot shield and shoulder-mounted rocket launchers.

Thief: A fast Shell focused on grabbing loot, using grappling hooks and remote-controlled drones.

Blackbird: A recon-focused Shell designed for scouting and revealing enemy positions.

Glitch: A highly mobile Shell built around speed and flanking enemies.

Void: A stealth-focused Shell capable of turning invisible and using smoke to escape danger.

Lifeline: A medic-style Shell focused on healing and supporting teammates during runs.

Rook: A prototype Shell that appears more disposable, allowing players to attempt loot runs without risking valuable equipment.

Besides the Shell itself, players can also customize weapons, implants, and gear setups depending on how they want to play each match. Some players will likely chase enemy teams across the map, while others may focus entirely on sneaking through dangerous areas to collect loot and leave before trouble starts. Bungie also confirmed that Shells can be customized with skins, unlocks, and upgrades, but the system seems more focused on different setups and playstyles than on creating a fully custom character like in Destiny.

The world of ‘Marathon’ is also shaped by powerful groups operating behind the scenes across Tau Ceti IV. So far, Bungie has introduced Traxus, a dangerous big company, Arachne, a combat-focused cult; and MIDA, a name longtime Bungie fans will likely recognize right away. Players will likely be able to work with these groups over time, unlocking support, upgrades, and equipment based on the loyalty earned during a season.

What makes the system interesting is the freedom it seems to offer players. Bungie does not appear interested in forcing everyone into a single role or a single style of gameplay. Instead, ‘Marathon’ seems built around experimenting with different Shells, weapons, and strategies, depending on how players want to survive each run.

‘Marathon’ (2026) | Image: Bungie

The Maps of ‘Marathon’

Players take on the role of Runners, but Bungie has said that Tau Ceti IV is really at the heart of ‘Marathon’. In each match, you explore big shared maps, searching for weapons, valuables, resources, and hidden clues before making your escape. Since every team is after the same things, even calm moments can suddenly turn into tense battles over loot or escape routes.

Every run feels tense because of the risks involved. If you die during a mission, you lose all the gear and valuables you were carrying. Bungie says you can come back with a different character, but anything you lost stays on the map for other teams to grab. The more often you escape, the better your gear and resources will be for your next runs.

Each map changes the difficulty and rewards. Some areas are safer, giving you a chance to recover after a tough loss, while others are much more dangerous but offer better loot.

Here are the maps that have been revealed so far:

Perimeter: This is an unfinished expansion zone linked to the Tau Ceti IV colony. Bungie says it’s a lower-level map with less danger and smaller rewards, so it’s a good spot for new players or for rebuilding after losing gear.

Dire Marsh: This flooded marshland has strange sci-fi touches like glowing ground, floating cargo containers, and overlapping structures that often push squads into fights. Bungie confirmed that up to 18 players can be on this map at once, so teams clash often as they compete for resources.

Outpost: This is a heavily guarded UESC facility packed with hostile security bots and tight vertical spaces. Bungie says it’s one of the most dangerous maps, with computer-controlled enemies and rival players fighting in the same spots. Still, it offers some of the best loot in the game.

Cryo Archive: This map is on the massive Marathon ship orbiting Tau Ceti IV. Cryo Archive is designed as an endgame area for well-equipped players. Bungie says its difficulty is similar to high-level activities in Destiny, and there are several vaults with better rewards the deeper you go.

Each map stands out because it handles player interaction, difficulty, and survival pressure in its own way. Some places let you explore and rebuild at your own pace, while others almost always lead to fights as soon as squads cross paths. With the shifting risks, the chance of losing your gear, and the mystery of Tau Ceti IV, the maps already look like a big reason why ‘Marathon’ could stand out from other multiplayer shooters.

The number of players changes from map to map. Bungie has confirmed that Dire Marsh can have up to 18 players at once, so several squads are fighting over the same loot, escape points, and resources. Other maps might have fewer players, and some could get even more chaotic based on their size and difficulty. This variety should make each location feel unique instead of just repeating the same formula.

If you survive a run and escape, you get to keep all the loot, weapons, and resources you found, which you can use in future matches or for upgrades. The more you risk, the more you can win, but there’s always the chance of losing everything. That pressure is at the heart of ‘Marathon’, especially as you learn escape routes, high-value spots, and which fights are worth it.

‘Marathon’ (2026) | Image: Bungie

Why Everyone Is Talking About ‘Marathon’?

A big reason people are paying so much attention to ‘Marathon’ is the studio behind it. Bungie helped shape modern shooters with games like Halo and Destiny, so the idea of Bungie entering the extraction shooter genre immediately caught players’ interest. Once the gameplay started showing up, the talk only got louder because of the game’s clear sci-fi art style, unusual world design, and the constant tension in every run.

The extraction shooter genre has become much more crowded in the last few years, but very few games have really become popular with a wide audience. That is part of why ‘Marathon’ feels different right now. Bungie is clearly aiming for something more tense and deliberate, rather than just nonstop action. Surviving, escaping with loot, managing risk, and knowing when to avoid fights all seem just as important as shooting. With the mystery around Tau Ceti IV, the different Runner Shells, and Bungie’s reputation for smooth gunplay, ‘Marathon’ has quickly become one of the multiplayer games people can’t stop talking about.

‘Marathon’ (2026) | Image: Bungie

‘Marathon’ Release Date

Bungie has confirmed that ‘Marathon’ is planned for release in March 2026, though the exact date remains unconfirmed. Unlike many modern multiplayer shooters, the game will be sold for $40 rather than being free-to-play, with free updates during the first year. The studio also said that reward passes will always be available and won’t disappear after short seasons, so players won’t have to rush to complete content before it’s gone. With growing interest in extraction shooters and Bungie’s long experience with multiplayer games, Marathon is already one of the most anticipated shooters for 2026.

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