The Wristwatch Field Guide

Seiko Prospex Shogun SPB189

SPB189 / SBDC129

The Seiko Prospex Shogun SPB189 is a current-production diver watch with a titanium (super titanium) case, finished with super-hard coating. At 121 g it sits around the middle for diver watches in the guide, and is priced above the $1,199 median for the category.

All Seiko watchesExotic-material diver watchesTitaniumDiversUnder $5,000
Price
$1,500
Material
Titanium
Grade / type
Titanium (Super Titanium)
Weight
121 g (with bracelet)
Water resistance
200 m
Reference
SPB189 / SBDC129
Type
Diver
Case diameter
43.5 mm
Thickness
13.3 mm
Lug-to-lug
51 mm
Origin
Japan
Movement
Automatic
Caliber
Seiko 6R35
Power reserve
70 h
Complications
Date
Colour
Grey
Surface treatment
Super-hard coating
Nickel-free
Not verified (contact-point materials not all confirmed)
Bracelet / strap
Titanium
Crystal
Sapphire
Display back
No
Dial
Black
Dial colours
Black
Lume
LumiBrite
Availability
Offered
Status
Current
Not published
Hardness, Construction, Caseback, Matching bracelet
High confidence Verified Jul 2026 Source: Seiko
Facts are free to cite with a link.
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Alternatives to the Seiko Prospex Shogun SPB189

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More exotic-material watches from Seiko

Seiko Prospex Shogun Titanium (SPB191)SeikoProspex Shogun Titanium (SPB191)$1,20043.5 mm13.3 mm thick99 gDiver
SeikoProspex "Cave Diver" Shogun Titanium (SPB349)$1,50043.5 mmDiverSeiko Prospex SeikoProspex "Cave Diver" Shogun Titanium (SPB351)$1,50043.5 mmDiver
SeikoProspex "Cave Diver" Shogun Titanium (SPB357)$1,50043.0 mmDiverSeiko Prospex Marinemaster Professional 600m Titanium (SBDX067)SeikoProspex Marinemaster Professional 600m Titanium (SBDX067)$4,60045.4 mmDiverSeiko Prospex LX Line Spring Drive GMT Titanium (SNR035)SeikoProspex LX Line Spring Drive GMT Titanium (SNR035)$5,25044.8 mmOther

Frequently asked questions

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

The Seiko Prospex Shogun SPB189 has a 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 $1,500.

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