Grand Seiko Welcomes Nine Refreshed Core Icons to Its Evolution 9 Series
From “Night Lake,” “Lake Suwa” to ”White Birch” and more.
Summary
Grand Seiko’s refreshed Evolution 9 line comprises nine Spring Drive and mechanical Hi-Beat models.
Dials feature nature-inspired textures including "Lake Suwa" ripples, grained "Birch" bark, and "Genbi Valley" rock.
Material upgrades span Ever-Brilliant Steel and High-Intensity Titanium cases as well as micro-adjustable clasps.
Grand Seiko has ushered in a defining new chapter for its flagship Evolution 9 Collection, completely renewing its core lineup through the lens of kodawari — the Japanese philosophy of an unyielding commitment to perfection. This unveiling spans nine sophisticated new references that seamlessly harmonize the raw beauty of Japanese nature with horological engineering.
“Night Lake” Spring Drive UFA SLGB007
Grand Seiko
Grand Seiko
Grand Seiko
Reference SLGB007 spotlights a “Night Lake” dial that captures the dark, quiet mystery of Lake Suwa at midnight. The deep black dial is intricately textured to mirror the gently rippling waters of the Nagano lake as it catches the fleeting, silver glimmers of moonlight. Instead of stainless steel, Grand Seiko encases this midnight scene in a 40mm silhouette sculpted from High-Intensity Titanium, a bright, lustrous alloy that is roughly 30% lighter and vastly more scratch-resistant than stainless steel.
Beneath this nocturnal facade lies the brand’s state-of-the-art Caliber 9RB2 Spring Drive UFA movement. Standing for “Ultra Fine Accuracy,” this self-winding caliber features a vacuum-sealed crystal oscillator and IC to eliminate environmental interference, complete with a 72-hour power reserve. Slated for a global release in September 2026, the “Night Lake” titanium edition will retail for $11,400 USD.
“Lake Suwa” Spring Drive UFA 40mm & 37mm: SLGB013, SLGB015
Grand Seiko
Grand Seiko
Grand Seiko
Grand Seiko
Grand Seiko
Grand Seiko
While previous iterations of the iconic Lake Suwa design focused on deeper aquatic tones, the new SLGB013 and SLGB015 models offer a brilliant comparative twist by reimagining the water’s surface bathed in the fresh clarity of morning sunlight. To achieve this sun-drenched effect, Grand Seiko’s artisans applied a lighter blue tone coupled with a radiant sunray finish to the signature wave-patterned dial. For the first time, this motif is offered in two distinct form factors to accommodate diverse wrist profiles: a classic 40mm and a highly requested, compact 37mm variant.
Both models are crafted from Ever-Brilliant Steel, a super-stainless-steel alloy renowned for its brilliant white hue and exceptional pitting and corrosion resistance. They are driven by the ultra-precise Caliber 9RB2 Spring Drive UFA movement, delivering flawless, glide-motion timekeeping backed by a 72-hour power reserve. Outfitted with the updated micro-adjustment clasp, these morning-light-inspired pieces will be available in September for $10,200 USD each.
“White Birch” & “Atera Valley” Spring Drive UFA: SLGB009, SLGB011
Grand Seiko
Grand Seiko
Grand Seiko
Grand Seiko
The natural splendor surrounding the Shinshu Watch Studio serves as the direct muse for the renewed SLGB009 “White Birch” and SLGB011 “Atera Valley” Spring Drive models. The SLGB009 captures the organic, vertical textures of the magnificent white birch forests, evoking the crisp clarity of highland air through its stark, white-grained dial. Sitting in rich contrast is the SLGB011 “Atera Valley,” which honors the deep, emerald-toned waters of the famed Nagano river destination, updated here with a richer, more profound dial color gradation to symbolize the slow, majestic passage of seasonal time.
Housed in 40mm cases made of Ever-Brilliant Steel, both timepieces effortlessly translate the untamed Japanese wilderness into wearable luxury. They share the advanced internal architecture of the vacuum-sealed Caliber 9RB2 Spring Drive UFA, providing unmatched mainspring-driven accuracy of +/ – 20 seconds annually. Arriving at retail partners worldwide in September, both references are priced at $10,200 USD.
“Night Birch” Hi-Beat SLGH029
Grand Seiko
Grand Seiko
Grand Seiko
Transitioning from the smooth sweep of Spring Drive to the rapid, rhythmic heartbeat of mechanical excellence, the “Night Birch” SLGH029 reinterprets one of Grand Seiko’s most beloved dial texture. This model contrasts dramatically with the original daytime iterations, evoking the quiet, haunting ambiance of the highland birch forests near the studio wrapped in the pitch-black shadows of a moonlit night. The deep, heavily black-channeled bark pattern plays beautifully with light and shadow, framed by a lightweight, rugged 40mm case and bracelet made of High-Intensity Titanium.
The mechanical soul of the “Night Birch” is the flagship Caliber 9SA5, an in-house automatic high-beat movement that operates at a blistering 36,000 vibrations per hour (5Hz). Thanks to its revolutionary Dual Impulse Escapement and twin-barrel system, it maintains an impressive 80-hour power reserve while maintaining a slim, comfortable profile on the wrist. Set to drop in October, the titanium “Night Birch” will retail for $11,400 USD.
“White Birch” & “Green Birch” Hi-Beat: SLGH031, SLGH033
Grand Seiko
Grand Seiko
Grand Seiko
Grand Seiko
Grand Seiko
Grand Seiko
The iconic “White Birch” texture returns to the mechanical realm alongside a vibrant newcomer, with the SLGH031 and SLGH033 references representing a masterful duet of the changing forest seasons. The SLGH031 updates the classic white-dialed birch motif by elevating its exterior to Ever-Brilliant Steel, injecting a brighter, more luminous contrast against the stark white bark pattern. Beside it, the SLGH033 “Green Birch” offers an entirely fresh seasonal narrative, drenching the deep birch bark texturing in a cool, refreshing verdant hue that evokes the memory of highland leaves bathed in peak summer sunlight.
Both mechanical creations are measured at a well-balanced 40mm diameter and come equipped with the new micro-adjustable clasp for tool-free, on-the-go comfort. Inside, the hand-finished Caliber 9SA5 high-beat movement ensures a daily rate accuracy of +5 to -3 seconds. Its beautifully sculpted bridges feature a curved outline inspired by the silhouette of Mount Iwate and a bend in the nearby Shizukuishi River. These birch-inspired models will be available globally in October for $10,200 USD.
“Genbi Valley” Hi -Beat SLGH035
Grand Seiko
Grand Seiko
Grand Seiko
Rounding out the renewed mechanical fleet is the poetic SLGH035, drawing its creative fire from the untamed, rugged beauty of the Genbi Valley. Stretching along the Iwai River in Iwate Prefecture, this national natural monument is translated onto the dial via a unique, granular texture that mirrors the valley’s distinctive, water-sculpted rock formations. The dial is finished in a serene, pale light-blue hue, mimicking the refreshing, clear stream as it cuts through the stone under a bright summer sky.
Crafted in a 40mm Ever-Brilliant Steel case, the watch perfectly mirrors the enduring strength of the valley’s geology. It is powered by the slim, high-frequency Caliber 9SA5 mechanical movement, which beats at 36,000vph and delivers an 80-hour power reserve. Assembled by hand by the master watchmakers of Studio Shizukuishi, this celebration of natural architecture is scheduled for an October release, carrying a retail price of $10,200 USD. For more information, visit Grand Seiko’s official website.
