Prospex ‘Cave Diving’ 1968 Diver’s Modern Re-interpretation


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This model is a redux of the 1968 “Cave Diving” watch. The original model was particularly innovative for its time, being powered by a 10-beat, hi-beat movement.

This latest iteration of the watch features the same streamlined form and crown at the 4 o’clock position – designed so that divers could swim through narrow spaces. The teal gradation dial is inspired by the depths of the water that only the most skilled can reach – showing the way a diver’s light shines in a cave.

The watch has a highly accurate and reliable in-house mechanical 8L35 calibre. When diving, watch legibility is of the utmost importance, so this watch features differentiated Lumibrite specifically on the minute hand and bezel, for quicker reading of diving time in dim underwater light.

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.

In the real watch, the caseback direction may differ from the photograph.


Accuracy: -10/+15 seconds per day
Calibre: 8L35
Movement Type: Automatic with Manual Winding
Power Reserve: 50 Hours
Dial Colour: Blue
LumiBrite: Lumibrite on hands, indexes and bezel
Case Material: Stainless steel (Bezel: Stainless steel with ceramic display)
Strap/Bracelet: Stainless Steel
Clasp: Three-fold clasp with secure lock, push button release with extender
Case Diameter: 42.6mm
Case Thickness: 13.1mm
Case Length: 49.3mm
Lug Width: 20.0mm
Other Specifications
Water Resistance: 20 bar
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
Watch Function: Date display, Stop seconds hand function

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