The Titanium 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 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, 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 diver watches
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Reference–
TypeDiver
Price$4,600 · LE 600
Case diameter45.4 mm
Thickness16 mm
Lug-to-lug50.4 mm
Water resistance600 m
Weight–
OriginJapan
MovementAutomatic
CaliberSeiko 8L45
Power reserve72 h
ComplicationsDate
TitaniumTitanium (super-hard coated)
Surface treatmentSuper-hard coating
Nickel-freeYes
Bracelet / strapTitanium bracelet (super-hard coated)
CrystalSapphire
Display backNo
DialBlue gradient, wave pattern
LumeLumiBrite
AvailabilityOffered
StatusLimited edition (600)
High confidence Verified 2026-06-20 Source: Monochrome / Time and Watches Maker / listing ↗
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