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Collections Evolution 9 Collection Spring Drive U.F.A. SLGB001
Grand Seiko Spring Drive UFA SLGB001
Grand Seiko Spring Drive UFA SLGB001
Grand Seiko Spring Drive UFA SLGB001
Grand Seiko Spring Drive UFA SLGB001
Grand Seiko Spring Drive UFA SLGB001
Grand Seiko Spring Drive UFA SLGB001
Grand Seiko Spring Drive UFA SLGB001 caseback
Grand Seiko UFA Caliber 9RB2
Grand Seiko Spring Drive UFA SLGB001 dial
Grand Seiko Spring Drive UFA SLGB001
Grand Seiko Spring Drive UFA SLGB001
Grand Seiko Spring Drive UFA SLGB001
Grand Seiko Spring Drive UFA SLGB001
Grand Seiko Spring Drive UFA SLGB001
Grand Seiko Spring Drive UFA SLGB001 caseback
Grand Seiko UFA Caliber 9RB2
Grand Seiko Spring Drive UFA SLGB001 dial

Spring Drive U.F.A. SLGB001

Grand Seiko Evolution 9 Collection
USD $39,000
Boutique Limited Edition of 80

Features

The intricately textured dial of the SLGB001 captures the serene beauty of the frost-covered trees that define the Kirigamine Highlands in winter. Its deep, lustrous blue surface reflects the subtle interplay of light and shadow, evoking the crisp stillness of a frozen landscape.

The Evolution 9 (E9) design follows Grand Seiko’s signature aesthetic, with its broad, faceted hands; prominent grooved markers; and precise combination of Zaratsu-polished and hairline-finished surfaces. Measuring 37mm in diameter, the case’s compact proportions ensure a comfortable and elegant fit on the wrist. The SLGB001 is presented on a crocodile strap, secured with a Platinum 950 three-fold clasp featuring elements of 18k white gold.

The SLGB001 is powered by the revolutionary Spring Drive Caliber 9RB2, a movement that sets a new standard in precision. With an extraordinary annual accuracy of ±20 seconds, it earns the Ultra Fine Accuracy (U.F.A.) designation, making it the most precise mainspring-powered movement ever created. This achievement is made possible through an advanced quartz oscillator, a newly developed integrated circuit, and a vacuum-sealed regulation system that shields the movement from environmental factors. The 72-hour power reserve and 34-jewel construction ensure long-term performance and reliability. Through the exhibition case back, the movement’s fine detailing and mirror-polished bevels reflect the masterful craftsmanship of the Shinshu Watch Studio, where Grand Seiko Spring Drive timepieces are made.

Case
Case Material : Platinum 950
Case Diameter : 37mm
Case Thickness : 11.4mm
Case Length : 44.3mm
Lug Width : 20mm
Dial Color : Blue
Crown : Push Down
Strap/Bracelet : Crocodile Leather w. three-fold clasp
Crystal : Box Shape Sapphire
Caseback : Platinum 950 with Sapphire Crystal
Special : Boutique Limited Edition of 80
Movement
Caliber : 9RB2
Type : Spring Drive
Power Source : Automatic
Jewels : 34
Accuracy : ±20 seconds per year (average)
Duration : 72 Hours
Functions
Features : Time, Date, Power Reserve Indicator (on movement side)
Water Resistance : 100m
Magnetic Resistance : 4,800 A/m
Evolution 9 Collection
The Evolution 9 collection embodies Grand Seiko’s pursuit of the ultimate practical watch. Rooted in the Grand Seiko Style established by the 1967 44GS, this design code has evolved to enhance aesthetics, legibility, and comfort while adapting to modern active lifestyles.
Evolution 9 Style

Designed in the Evolution 9 Style, the SLGB001 refines Grand Seiko’s ideals of beauty, legibility, and comfort in a smaller 37mm case. The striking form blends distortion-free Zaratsu polishing with delicate hairline finishes for a soft glow, while bold, grooved indexes and powerful hands enhance readability.

Kirigamine Highlands

The deep, lustrous blue dial of SLGB001 captures the quiet elegance of winter in the Kirigamine Highlands, where frost-covered trees stand in serene stillness. Its rich texture reflects subtle shifts in light, while the smoothly gliding silver-colored seconds hand enhances the dial’s sense of seamless, natural timekeeping—a hallmark of Spring Drive.

Platinum 950

The case is crafted from Platinum 950 and features a specialized Zaratsu polishing technique, refined specifically for platinum, achieving the distinctive brilliance that defines Grand Seiko.

Caliber 9RB2 - Ultra Fine Accuracy (U.F.A.) 


Caliber 9RB2 introduces the Ultra Fine Accuracy (U.F.A.) designation, achieving an extraordinary annual precision of ±20 seconds—the most accurate mainspring-powered movement ever created (as of April 2025, based on Grand Seiko’s research). This exceptional performance is made possible by an aged quartz oscillator, a newly developed integrated circuit, and a vacuum-sealed regulation system that ensures long-term stability. With a 72-hour power reserve and 34-jewel construction, 9RB2 embodies Grand Seiko’s relentless pursuit of innovation and precision.

Grand Seiko’s Boutique Online Services
Free 2-3 Day Shipping
2-Week Returns & Exchanges
Exclusive 6-Year Warranty
Customer Support
Free 2-3 Day Shipping

Free shipping is 2-3 business days via Fed Ex Signature Required. Orders placed before 2 pm ET are generally processed and shipped on the same business day, and orders placed after 2 pm ship the following business day. Orders are processed Monday – Friday, and orders placed on Holidays will be processed the following business day. Next Day Service can be purchased for $50 and includes Saturday Delivery when applicable. Please see TERMS for more.

2-Week Returns and Exchanges

Products may be returned to Grand Seiko Boutique Online within 14 days of the delivery date. Option for a return and refund or exchange is possible when the watch is returned in new, unworn condition, with all original contents included in the package. Upon receiving your return, Grand Seiko will verify the condition of the watch. If there are any missing items, damage, or wear found, you may be subject to fees accordingly. Please be sure to remove any jewelry or other watches before trying on the watch to avoid damage.  Please do not size the watch if you return it as it will not be considered new. Please contact the Grand Seiko Boutique Online team HERE to initiate a return. Please see the TERMS for more.

Exclusive 6-Year Warranty

Warranty – All Grand Seiko watches come with a 5-year international warranty. Grand Seiko Boutiques and Grand Seiko Boutique Online provide an additional 1-year warranty at no additional charge for a total of 6 years coverage under the limited warranty. Please see the TERMS for more.

Customer Support

Email, Phone, and Live chat info:

Scheduled hours of operation are Mon-Fri 9am-6pm. However, Grand Seiko Boutique teams may be able to assist at other times depending on availability.

Email: boutique.online@grand-seiko.us.com 

Phone: 888-300-8463 



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We're Updating: Shipping Delays
While we’re updating our system, all orders placed between March 28 and April 5 will not ship until after April 5. Thank you for your patience and understanding.