Seiko Prospex "Cave Diver" Shogun Titanium (SPB351)

The Seiko Prospex "Cave Diver" Shogun Titanium (SPB351) is a current-production diver watch with a titanium (super-hard coating) case, finished with super-hard coating. It is priced above the $1,299 median for the category. It ships on a matching titanium bracelet rather than a strap.

1 official photo · reader photos welcome

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

Light blue-gray (textured)

Dial colours

Grey Blue

Lume

LumiBrite

Availability

Offered

Status

Current

Not published

Reference, Thickness, Lug-to-lug, Weight, Hardness, Construction

Medium confidence Verified Jul 2026 Source: Seiko Luxe / AZ Fine Time

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