Grand Seiko Evolution 9 Collection SLGB023

The “Ushio 300,” a Spring Drive diver’s watch with phenomenal accuracy and a stunning blue dial

In 2025, Grand Seiko unveiled the Spring Drive Calibre 9RB2, a groundbreaking movement that received the then-new U.F.A. designation, standing for “Ultra Fine Accuracy.” Boasting an annual accuracy rate of ±20 seconds, Calibre 9RB2 earned the distinction of being the most accurate wristwatch movement powered by a mainspring.* This model is powered by Calibre 9RB1, featuring an improved construction that makes it ideal for sporting conditions while sharing the same attributes as the Calibre 9RB2.

The term "ushio", which means “tide” in Japanese, evokes the waters that surround the Japanese archipelago. This creation’s blue dial reflects the vast expanse of the sea through a gradient that captures light streaming into the deep ocean.

* As of April 2026, based on Grand Seiko’s research."

Every Grand Seiko timepiece comes with a 5-year limited guarantee.

The following guide explains the condition terms used throughout our pre-owned and vintage watch collection.

• New
  Brand-new and unworn, supplied by J. Farren Price as an authorised dealer with the applicable manufacturer warranty.
• New Old Stock (NOS)
  An unworn watch from an earlier production period. Minor storage or handling marks may be present.
• Mint
  An exceptional pre-owned example presenting in near-new condition, with no visible wear.
• Excellent
  A very well-preserved watch showing only light signs of careful use.
• Very Good
  A well-presented watch showing normal signs of use, including minor scratches or surface wear.
• Good
  A watch showing more noticeable signs of regular use and age, while remaining presentable.

Vintage watches
Condition is assessed in the context of the watch's age. Natural patina and period-appropriate ageing may be present and do not necessarily detract from its grade.

Condition grades relate to cosmetic presentation. Originality, replacement parts, service history and accessories are described separately where known. Please refer to the individual product description and photographs for further details.

For more in depth information about any of our timepieces, feel free to contact our team directly on (08) 8223 2787 or visit our boutique to view in person.