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Seiko Prospex "Cave Diver" Shogun Titanium (SPB349)

Archive · used only

The Seiko Prospex "Cave Diver" Shogun Titanium (SPB349) was a 43.5 mm titanium dive watch with a 6R35 automatic movement. The case is surface-hardened, which guards against the scuffs bare titanium picks up. It is no longer made, so this page is a reference for buying one used.

All Seiko watchesDiver watchesUnder $3,000On a titanium bracelet
Price
$1,500
Material
Titanium
Grade / type
Titanium (super-hard coating)
Water resistance
200 m
Type
Diver
Case diameter
43.5 mm
Origin
Japan
Movement
Automatic
Caliber
6R35
Power reserve
70 h
Complications
Date
Colour
Grey
Surface treatment
Super-hard coating
Finish technology
Surface hardening
Caseback
Titanium
Nickel-free
Unconfirmed (clasp or buckle material not confirmed)
Bracelet / strap
Titanium bracelet
Matching bracelet
Standard
Crystal
Sapphire
Display back
No
Dial
Green (textured)
Dial colours
Green
Lume
LumiBrite
Availability
No longer offered
Status
Archive (retired; the maker no longer lists the Cave Diver Shogun series, per an owner check on 2026-10-17)
Not published
Reference, Thickness, Lug-to-lug, Weight, Hardness, Construction
Medium confidence Verified Jul 2026 Source: Seiko Luxe / AZ Fine Time
Facts are free to cite with a link.
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Alternatives to the Seiko Prospex "Cave Diver" Shogun Titanium (SPB349)

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More watches from Seiko

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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 mmOtherSeiko Prospex Marinemaster Professional 600m Titanium (SLA081, 60th Anniversary)SeikoProspex Marinemaster Professional 600m Titanium (SLA081, 60th Anniversary)$4,60045.4 mm16 mm thick174 gDiver

Frequently asked questions

What grade of titanium is the Seiko Prospex "Cave Diver" Shogun Titanium (SPB349)?

Titanium, with no grade stated. The caseback is titanium too. The record is at medium confidence, so check the maker's page before relying on it.

What size is the Seiko Prospex "Cave Diver" Shogun Titanium (SPB349)?

The case is 43.5 mm across. It is water resistant to 200 m.

How much does the Seiko Prospex "Cave Diver" Shogun Titanium (SPB349) cost, and is it available?

It is no longer made, so the only way to buy one is used. Its list price when it was in production was $1,500.

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