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Prospex ‘Tuna’

Categories: , S23633J1


Out of Stock
Case Diameter47.7mm
Movement TypeQuartz

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This watch shape is affectionately nicknamed by Seiko fans as a ‘Tuna’ – because of its larger diameter and bold shape like a tuna tin – loved for decades since its release in 1975. This new version has been updated from the original for increased legibility under water – the minute hand is emphasised by being arrow-shaped, simpler circular and triangular indices are easy to distinguish underwater as well as improved visibility of the indicator ring on the rotating bezel.

Seiko Prospex watches are designed for sports lovers and adventure seekers whether in the water, in the sky or on land. Since launching Japan’s first diver’s watch in 1965, Seiko’s innovative watchmaking has changed global dive watch standards.


Accuracy: -15/+15 seconds per month
Calibre: 7C46
Movement Type: Quartz
Power Reserve: 5 years
Watch Case
Case Material: Stainless Steel
Case Thickness: 14.1mm
Case Diameter: 47.7mm
Case Length: 46.7mm
Dial Colour: Black
LumiBrite: Lumibrite on hands and indexes
Clasp: Three-fold clasp with push button release
Strap/Bracelet: Stainless Steel
Other Specifications
Water Resistance: 30 bar
Crystal Coating: Anti-reflective coating on inner surface
Crystal Type: Sapphire