The Wristwatch Field Guide

Seiko Prospex Marinemaster Professional 600m Titanium (SLA081, 60th Anniversary)

The Seiko Prospex Marinemaster Professional 600m Titanium (SLA081, 60th Anniversary) is a current-production diver watch with a grey titanium (super-hard coated) case, finished with super-hard coating. It measures 45.4 mm across, 16 mm thick, 50.4 mm lug to lug, 174 g, and is water resistant to 600 m. Inside is the Seiko 8L45 automatic movement, with 72 h power reserve. Complications: Date. Priced from $4,600 (LE 600). Brand origin: Japan.

Titanium and ceramic diver watchesTitaniumDiversUnder $5,000
Reference
Type
Diver
Price
$4,600 · LE 600
Case diameter
45.4 mm
Thickness
16 mm
Lug-to-lug
50.4 mm
Water resistance
600 m
Weight
174 g (head only)
Origin
Japan
Movement
Automatic
Caliber
Seiko 8L45
Power reserve
72 h
Complications
Date
Material
Titanium
Grade / type
Titanium (super-hard coated)
Colour
Grey
Hardness
Construction
Surface treatment
Super-hard coating
Caseback
Titanium
Nickel-free
Not verified (clasp or buckle material not confirmed)
Bracelet / strap
Titanium bracelet (super-hard coated)
Matching bracelet
Standard
Crystal
Sapphire
Display back
No
Dial
Blue gradient, wave pattern
Lume
LumiBrite
Availability
Offered
Status
Limited edition (600)
High confidence Verified Jun 2026 Source: Monochrome / Time and Watches 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 Marinemaster Professional 600m Titanium (SLA081, 60th Anniversary)?

The Seiko Prospex Marinemaster Professional 600m Titanium (SLA081, 60th Anniversary) has a grey titanium (super-hard coated) case with a titanium caseback. This is confirmed against the maker spec.

What size is the Seiko Prospex Marinemaster Professional 600m Titanium (SLA081, 60th Anniversary)?

It is 45.4 mm in diameter, 16 mm thick, 50.4 mm lug to lug, and water resistant to 600 m.

How much does the Seiko Prospex Marinemaster Professional 600m Titanium (SLA081, 60th Anniversary) weigh?

About 174 g (head).

How much does the Seiko Prospex Marinemaster Professional 600m Titanium (SLA081, 60th Anniversary) cost, and is it available?

It is current-production and lists from $4,600.

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