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

Archive · used only

The Seiko Prospex Marinemaster Professional 600m Titanium (SLA081, 60th Anniversary) was a 45.4 mm titanium dive watch with a Seiko 8L45 automatic movement. At 174 g, it is heavier than 90% of the 102 titanium dive watches weighed without a bracelet. 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 watchesLightest, rankedOn a titanium bracelet
Price
$4,600
Material
Titanium
Grade / type
Titanium (super-hard coated)
Weight
174 g (head only)
Water resistance
600 m
Type
Diver
Case diameter
45.4 mm
Thickness
16 mm
Lug-to-lug
50.4 mm
Origin
Japan
Movement
Automatic
Caliber
Seiko 8L45
Power reserve
72 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 (super-hard coated)
Matching bracelet
Standard
Crystal
Sapphire
Display back
No
Dial
Blue gradient, wave pattern
Dial colours
Blue
Lume
LumiBrite
Availability
No longer offered
Status
Archive (60th Anniversary limited edition of 600, sold out; maker product page retired)
Not published
Reference, Hardness, Construction
High confidence Verified Jul 2026 Source: Monochrome / Time and Watches Maker ↗
Facts are free to cite with a link.
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Frequently asked questions

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

The maker confirms titanium but does not publish a grade. The caseback is titanium too.

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

The case is 45.4 mm across, 16 mm thick and 50.4 mm from lug to lug. It is water resistant to 600 m.

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

About 174 g for the watch head alone.

How much does the Seiko Prospex Marinemaster Professional 600m Titanium (SLA081, 60th Anniversary) 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 $4,600.

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