Cover Grand Seiko SLGB007 Lake Suwa Black
Grand Seiko SLGB007 Lake Suwa Black
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Nine new references bring together Grand Seiko's latest Spring Drive technology, upgraded materials, improved ergonomics and fresh expressions of the Japanese landscapes that have long inspired the brand's most celebrated dials
Grand Seiko's flagship Evolution 9 collection enters a new chapter this year with nine refreshed references that refine both the watches' mechanics and everyday wearability. Five Spring Drive models now house the latest U.F.A. Calibre 9RB2, while the mechanical references continue with the high-beat Calibre 9SA5. Across the collection, new materials, improved bracelet ergonomics and updated dial finishes demonstrate the Japanese manufacture's measured approach to evolution.
Grand Seiko’s goal was not to redesign the collection but to focus on improving the experience of wearing it. Every new model receives a three-step micro-adjustment clasp that allows the bracelet to be adjusted in 2mm increments without tools—a practical addition for daily wear, particularly in warmer climates where wrist sizes fluctuate throughout the day. The bracelets themselves now feature a more pronounced taper, giving the watches a lighter, more balanced feel while preserving the sharp, architectural lines that define the Evolution 9 aesthetic.
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Above Grand Seiko U.F.A. Calibre 9RB2
Grand Seiko U.F.A. Calibre 9RB2
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The choice of materials has also been revisited. Seven of the nine references are crafted from Ever-Brilliant Steel, Grand Seiko's proprietary alloy prized for both its exceptional corrosion resistance and brighter appearance than conventional stainless steel. The remaining two models utilise High-Intensity Titanium, which is approximately 30 per cent lighter than steel while offering increased scratch resistance, making it an ideal choice for everyday sports watches.
The most significant technical update arrives inside the five Spring Drive references. They are now powered by the U.F.A. (Ultra Fine Accuracy) Calibre 9RB2, first introduced in 2025. Rather than measuring precision by daily performance, the movement is rated at an annual accuracy of ±20 seconds—approximately ±3 seconds per month—making it the most accurate mainspring-powered wristwatch movement currently available, according to Grand Seiko. The movement achieves this through individually aged and vacuum-sealed crystal oscillators, sophisticated thermo-compensation and a regulation switch that allows long-term accuracy to be fine-tuned during servicing. It also delivers a 72-hour power reserve.
Grand Seiko SLGB009 White Birch
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The new movement is accompanied by refreshed interpretations of several of Grand Seiko's most recognisable dials, each inspired by landscapes surrounding the Shinshu Watch Studio in Nagano. The Lake Suwa motif, one of the collection's defining signatures, returns in three distinct expressions. The familiar blue version has been brightened to evoke morning sunlight shimmering across the lake's rippling surface and is offered in both a 40mm case (SLGB013) and a new 37mm size (SLGB015), broadening the appeal of one of the manufacture's most popular designs.
A completely new interpretation comes in the form of the SLGB007. For the first time, the Lake Suwa pattern appears beneath a black dial, capturing the stillness of moonlight reflected across the lake at midnight. Housed in High-Intensity Titanium, it offers a more restrained, atmospheric take on a dial that has become one of Grand Seiko's modern signatures.
The remaining Spring Drive models revisit two equally familiar landscapes. The White Birch (SLGB009) retains its distinctive forest-inspired texture but introduces a brighter sunray finish that adds greater brilliance and depth, evoking sunlight filtering through the trees. Meanwhile, the Atera Valley (SLGB011) deepens its signature emerald-green hue, recalling the crystalline waters of the Atera River with a richer gradation that enhances the dial's sense of movement and depth.
Grand Seiko SLGH029 Night Birch
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The four mechanical references continue to be powered by Grand Seiko's flagship Hi-Beat Calibre 9SA5. Operating at 36,000 vibrations per hour, the movement combines a Dual Impulse Escapement with a twin-barrel architecture to deliver an impressive 80-hour power reserve. Its horizontally arranged gear train also contributes to a slimmer profile, while the movement itself reflects its place of origin: the bridges are shaped to echo Mount Iwate and the nearby Shizukuishi River surrounding the Grand Seiko Studio where every calibre is assembled by hand.
Here too, familiar landscapes return in refreshed form. The White Birch (SLGH031) remains a cornerstone of the collection, while the new Green Birch (SLGH033) introduces a vibrant green interpretation inspired by forests bathed in summer sunlight. The Night Birch (SLGH029), crafted in High-Intensity Titanium, offers a darker expression that captures the stillness of the Hiraniwa Plateau after dusk, its textured dial recalling the vertical rhythm of white birch trunks. Completing the quartet is the Genbi Valley (SLGH035), whose textured turquoise dial reflects the flowing waters and rugged rock formations of one of Iwate Prefecture's most celebrated natural landscapes.
Credits
Images: Grand Seiko
Topics
Annabel Tan is the Editor of Watches and Jewellery at Tatler Singapore, where she covers all things luxury timepieces and fine jewellery across both print and digital platforms. She is also the Editor of Tatler GMT Singapore, a role that deepens her fascination with the ever-evolving world of watchmaking. Outside of work, she’s usually on the hunt for her next favourite watch that she can’t afford, planning her next beach getaway, or catching up on the latest Formula 1 race.
