The Wristwatch Field Guide

Seiko Prospex Shogun SPB189

SPB189 / SBDC129

The Seiko Prospex Shogun SPB189 is a current-production diver watch with a grey titanium (super titanium) case, finished with super-hard coating. It measures 43.5 mm across, 13.3 mm thick, 51 mm lug to lug, 121 g, and is water resistant to 200 m. Inside is the Seiko 6R35 automatic movement, with 70 h power reserve. Complications: Date. Priced from $1,300 (approx). Brand origin: Japan.

Titanium and ceramic diver watchesTitaniumDiversUnder $5,000
Reference
SPB189 / SBDC129
Type
Diver
Price
$1,300 · approx
Case diameter
43.5 mm
Thickness
13.3 mm
Lug-to-lug
51 mm
Water resistance
200 m
Weight
121 g (with bracelet)
Origin
Japan
Movement
Automatic
Caliber
Seiko 6R35
Power reserve
70 h
Complications
Date
Material
Titanium
Grade / type
Titanium (Super Titanium)
Colour
Grey
Hardness
Construction
Surface treatment
Super-hard coating
Caseback
Nickel-free
Not verified (contact-point materials not all confirmed)
Bracelet / strap
Titanium
Matching bracelet
Crystal
Sapphire
Display back
No
Dial
Black
Lume
LumiBrite
Availability
Offered
Status
Current
High confidence Verified Jun 2026 Source: Seiko Maker / listing ↗
Facts are free to cite with a link.
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Frequently asked questions

What is the case material of the Seiko Prospex Shogun SPB189?

The Seiko Prospex Shogun SPB189 has a grey titanium (super titanium) case. This is confirmed against the maker spec.

What size is the Seiko Prospex Shogun SPB189?

It is 43.5 mm in diameter, 13.3 mm thick, 51 mm lug to lug, and water resistant to 200 m.

How much does the Seiko Prospex Shogun SPB189 weigh?

About 121 g (w/ bracelet).

How much does the Seiko Prospex Shogun SPB189 cost, and is it available?

It is current-production and lists from $1,300.

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