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Collections Evolution 9 Collection Spring Drive UFA Ushio 300 Diver SLGB025
Spring Drive UFA Ushio 300 Diver SLGB025
Spring Drive UFA Ushio 300 Diver SLGB025
Spring Drive UFA Ushio 300 Diver SLGB025
Spring Drive UFA Ushio 300 Diver SLGB025
Spring Drive UFA Ushio 300 Diver SLGB025
Spring Drive UFA Ushio 300 Diver SLGB025
Spring Drive UFA Ushio 300 Diver SLGB025
Spring Drive UFA Ushio 300 Diver SLGB025
Spring Drive UFA Ushio 300 Diver SLGB025
Spring Drive UFA Ushio 300 Diver SLGB025
Spring Drive UFA Ushio 300 Diver SLGB025
Spring Drive UFA Ushio 300 Diver SLGB025
Spring Drive UFA Ushio 300 Diver SLGB025
Spring Drive UFA Ushio 300 Diver SLGB025
Spring Drive UFA Ushio 300 Diver SLGB025
Spring Drive UFA Ushio 300 Diver SLGB025
Spring Drive UFA Ushio 300 Diver SLGB025
Spring Drive UFA Ushio 300 Diver SLGB025
Spring Drive UFA Ushio 300 Diver SLGB025
Spring Drive UFA Ushio 300 Diver SLGB025
Spring Drive UFA Ushio 300 Diver SLGB025

Spring Drive UFA Ushio 300 Diver SLGB025

Grand Seiko Evolution 9 Collection
USD $12,400
Ships June 2026
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Out of Stock

Features

Grand Seiko Evolution 9 Collection Spring Drive U.F.A. Ushio 300 Diver SLGB025


The SLGB025 channels the serenity of shallow coastal waters with a deep green Ushio-patterned dial. Subtle texture, gradient shading, and prominent diamond-cut hour markers maximize readability, while the broad, luminescent hands ensure clarity in any light. Its ceramic 120-click unidirectional bezel mirrors the dial’s color, emphasizing the natural inspiration of tides and waves.

Inside, the Spring Drive Caliber 9RB1 delivers Grand Seiko’s Ultra Fine Accuracy with ±20 seconds per year, supported by a vacuum-sealed oscillator and thermo-compensated IC. The movement’s power reserve, three-day autonomy, and offset magic lever for rapid winding make it a robust and reliable tool for professional or recreational diving.

Housed in High-Intensity Titanium, the 40.8mm case offers durability and lightness, while the Evolution 9 ergonomic design and newly developed extension clasp with micro-adjustment ensure a secure and comfortable fit on the wrist. The SLGB025 embodies precision, elegance, and the enduring beauty of Japan’s coastal waters.

Case
Case Material : High-Intensity Titanium
Case Diameter : 40.8mm
Case Thickness : 12.9mm
Case Length : 48.5mm
Lug Width : 21mm
Dial Color : Green
Crown : Screw Down
Strap/Bracelet : High-Intensity Titanium w. three-fold clasp
Crystal : Sapphire
Caseback : High-Intensity Titanium
Special : Locking extension clasp with micro-adjustment
Movement
Caliber : 9RB1
Type : Spring Drive
Power Source : Automatic
Jewels : 34
Accuracy : ±20 seconds per YEAR (average)
Duration : 72 Hours
Functions
Features : Time, Date, Power Reserve Indicator
Water Resistance : 300m
Magnetic Resistance : 4,800 A/m
Grand Seiko 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

A compact 40.8mm diver’s watch combining Evolution 9 ergonomics with the unprecedented accuracy of Spring Drive U.F.A., designed for both performance and wrist comfort.

Ushio

Gradient green Ushio-pattern dial recalls coastal waters, with bold diamond-cut indexes and hands for excellent underwater legibility.

Locking Extension Clasp with Mico-Adjustment

Titanium bracelet with a locking extension clasp, micro-adjustment, and 18mm extension for diving suit use, combining safety and comfort.

High-Intensity Titanium

Crafted from high-intensity titanium, the case and bracelet are not only 30% lighter than stainless steel but also more resistant to scratches, ensuring durability without compromising comfort.

Caliber 9RB1 - Ultra Fine Accuracy (U.F.A.)

Spring Drive Caliber 9RB1 U.F.A., ±20 seconds/year, three-day power reserve, vacuum-sealed oscillator, and optimized for precision expected of the U.F.A. mark.

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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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.