The Wristwatch Field Guide

Grand Seiko Evolution 9 Spring Drive Diver 200m "Ushio" (SLGA023)

The Grand Seiko Evolution 9 Spring Drive Diver 200m "Ushio" (SLGA023) is a current-production diver watch with a grey high-intensity titanium case. It measures 43.8 mm across, and is water resistant to 200 m. Inside is the 9RA5 spring drive movement, with 120 h power reserve. Complications: Date, Power reserve. Priced from $9,600 (MSRP). Brand origin: Japan.

Titanium and ceramic diver watchesTitaniumDiversDisplay back
Reference
Type
Diver
Price
$9,600 · MSRP
Case diameter
43.8 mm
Thickness
Lug-to-lug
Water resistance
200 m
Weight
Origin
Japan
Movement
Spring Drive
Caliber
9RA5
Power reserve
120 h
Complications
Date, Power reserve
Material
Titanium
Grade / type
High-Intensity Titanium
Colour
Grey
Hardness
Construction
Surface treatment
None
Caseback
Nickel-free
Not verified (contact-point materials not all confirmed)
Bracelet / strap
Titanium bracelet
Matching bracelet
Standard
Crystal
Sapphire
Display back
Yes
Dial
Blue (Ushio)
Lume
LumiBrite
Availability
Offered
Status
Current
Medium confidence Verified Jul 2026 Source: Grand Seiko (maker) / Monochrome Maker / listing ↗
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Frequently asked questions

What is the case material of the Grand Seiko Evolution 9 Spring Drive Diver 200m "Ushio" (SLGA023)?

The Grand Seiko Evolution 9 Spring Drive Diver 200m "Ushio" (SLGA023) has a grey high-intensity titanium case. It is recorded at medium confidence pending a maker-stated material.

What size is the Grand Seiko Evolution 9 Spring Drive Diver 200m "Ushio" (SLGA023)?

It is 43.8 mm in diameter, and water resistant to 200 m.

How much does the Grand Seiko Evolution 9 Spring Drive Diver 200m "Ushio" (SLGA023) cost, and is it available?

It is current-production and lists from $9,600.

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