Seiko - Prospex Marinemaster 1968 Heritage Diver's White Dial - SLA077

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Ever since its first diver’s watch in 1965, Seiko has developed new technologies,
features, and designs that have made its diver’s watches favorites among
professional divers and adventurers the world over.

In 1968, just three years after Seiko’s first diver’s watch was made, the brand’s
engineers raised the bar by creating a high-beat diver’s watch with 300 meters
of water resistance, laying one of the foundation stones on which future Seiko
diver’s watch development would be based. It featured a high-precision 10-beat
automatic movement, a one-piece case construction, a screw-down crown, and
a unidirectional rotating bezel.

The 1968 watch struck a chord with successive generations of sports watch
enthusiasts thanks to its robust design and high functionality.

Seiko introduces a new creation that re-interprets the design of 1968 in the
Marinemaster collection.

High legibility for professional use
The high-contrast design, with its precisely controlled color and texture of the
dial and indexes, boasts outstanding legibility.

Designs rooted in heritage
The case has a beautiful, distortion-free mirror surface, as inherited from the
original design of 1968. The unique case shape is firmly established as one of
today’s signature Seiko diver’s watch designs.

Outstanding grip and easy maintenance
The knurled shape the rotating bezel and crown have been improved for a better
grip. To ensure the watch's durability, the crown is not screwed directly into the
case but locked into a separate component that is built into the case so it can be
more easily replaced.

Bright, long-lasting Lumibrite
The watch is fitted with a high-transparency, dual-curved sapphire crystal with
an anti-reflective coating on the inner surface to enhance legibility. High-intensity
Lumibrite applied to the indexes and hands helps to increase safety and reduce
stress when diving.

A movement made for diver’s watches
Seiko’s highly accurate and robust Caliber 8L35 is crafted to the highest standards
for performance and functional beauty.

Movement
Caliber Number: 8L35
Movement Type: Automatic with manual winding
Power reserve: Approx. 50 hours
Jewels: 26

Functions
28,800 vibrations per hour (8 beats per second)
Stop second hand function
Date display

Case / Band
Case Material: Stainless steel
Case Size
Thickness: 13.4 mm
Diameter: 42.6 mm
Lug-to-lug: 49.3 mm

Crystal
Dual-curved sapphire crystal
Crystal Coating: Anti-reflective coating on inner surface
LumiBrite: LumiBrite on hands, index(es) and bezel

Clasp
Three-fold clasp with secure lock , push button release with extender
Distance between lugs: 20 mm

Other Details
Water Resistance: 300m / 1000ft diver's
Magnetic Resistance: 4,800 A/m
Weight: 196.0g

Features
Unidirectional rotating bezel
Screw-down crown
Three-fold clasp with secure lock
Screw case back