Grand Seiko SLGB023
In 2025, Grand Seiko unveiled the Spring Drive Caliber 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, Caliber 9RB2 earned the distinction of being the most accurate wristwatch movement powered by a…
| Reference | SLGB023 |
|---|---|
| Collection | Evolution 9 |
| Case diameter | 40.8 mm |
| Case material | High-Intensity Titanium |
| Movement | Spring Drive |
| Power reserve | 72 h |
| Water resistance | 300 m |
| Crystal | Sapphire |
| Original retail (USD) | $12,400 |
This is a reference-catalog entry for the Grand Seiko SLGB023. WatchFlow's Watch Library lets a dealer attach a reference like this to a piece of stock in one click, so the brand, reference and specs are filled in automatically instead of retyped — then that record drives listings, invoices and reports. See how it fits the wider watch inventory management workflow.
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