Seiko Prospex 1965 Revival Diver’s 3-day 300m in Scuba Blue

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Seiko Prospex 1965 Revival Diver’s 3-day 300m in Scuba Blue


This piece is a re-interpretation of Japan’s – and Seiko’s – first ever Diver’s watch, released in 1965.

The original automatic 1965 Diver’s watch marked the beginning of Seiko’s watchmaking pursuit for diving reliability, safety, and professional specifications. From 1966-1969, this watch was worn by members of the Japanese Antarctic Research Expedition on trips to the South Pole, proving its durability in challenging environments.

For this latest redux, the design is updated with a more sophisticated specification, heightened water resistance, and improved power reserve. Built in a 40mm stainless steel case, the sapphire crystal glass is surrounded by a deep ‘scuba’ blue bezel and matching dial. In line with professional ISO Diving specification, the hands and indices are coated in glow-in-the-dark Lumibrite whilst its upright date calendar in a 4.5 o’clock position also add to its legibility. For extra comfort and wearability, the bracelet has updated short pitch links and a shorter buckle. It is also slimmer than previous models, with a 13mm depth.

The in-house built 6R55 automatic movement is accurate to -15/+25 seconds per day with a 72-hour power reserve and 300m water resistance.

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.


Accuracy:-15/+25 seconds per day
Movement Type:Automatic with Manual Winding
Power Reserve:72 Hours
Dial Colour:Blue
LumiBrite:Lumibrite on hands, indexes and bezel
Case Material:Stainless Steel
Strap/Bracelet:Stainless Steel
Clasp:Three-fold clasp with secure lock and extender
Case Diameter:40.0mm
Case Thickness:13.0mm
Case Length:46.4mm
Lug Width:20.0mm
Other Specifications
Water Resistance:30 bar
Crystal Coating:Anti-reflective coating on inner surface
Crystal Type:Curved Sapphire Crystal
Other Specifications:Screw case back, Screw-down crown, Unidirectional rotating bezel, Three-fold clasp with secure lock
Watch Function:Stop seconds hand function
Magnetic Resistance:4,800 A/m

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