Prospex Marinemaster 1968 Diver’s Reinterpretation SLA077J1

In 1968, Seiko launched revolutionary new innovation with the world’s first hi-beat Diver’s watch. With a case design inspired by the original 1968 piece, carrying the name ‘Marinemaster’ from Seiko’s heritage in diving watchmaking, this new re-interpretation has the same 300m water resistance.

Under a dual-curved sapphire crystal glass is a crisp white dial with a subtle sand-like pattern. Designed for high contrast under water, all aspects are optimised for diving conditions: a streamlined case, with the crown in the comfy 4 o’clock position, strong Lumibrite for legibility at the darkest depths and a unidirectional rotating bezel as per ISO Diving standard.

Especially crafted for divers, the 8L35 calibre is a highly accurate, reliable and robust movement. Crafted at the Shizukuishi Watch Studio in Japan’s Iwate prefecture, this calibre is accurate to +15/-10 seconds per day with a 50-hour power reserve.

Prospex is a combination of the words ‘Professional’ and ‘Specifications.’ Seiko Prospex timepieces are designed to be practical, reliable and durable; to meet the high standards required in extreme environments for sports lovers and adventure seekers alike.

Movement
Accuracy: -10/+15 seconds per day
Calibre: 8L35
Movement Type: Automatic with Manual Winding
Power Reserve: Approx. 50 hours
Jewels: 26

Exterior
Dial Colour: White
LumiBrite: Lumibrite on hands, indexes and bezel
Case Material: Stainless Steel
Strap/Bracelet: Stainless steel
Clasp: Three-fold clasp with secure lock, push button release with extender
Case Diameter: 42.6mm
Case Thickness: 13.4mm
Case Length: 49.3mm
Lug Width: 20.0mm

Other Specifications
Water Resistance: 300m
Weight: 196.0g
Crystal Coating: Anti-reflective coating on inner surface
Crystal Type: Dual-curved sapphire crystal
Other Specifications: Screw case back, Screw-down crown, Unidirectional rotating bezel, Three-fold clasp with secure lock
Watch Function: 28,000 vibrations per hour (10 beats per second), Date display, Stop seconds hand function
Magnetic Resistance: 4,800 A/m