Seiko Prospex Tuna Limited Edition Reinterpretation Black Watch-S23631



1975 Saturation Diver’s Watch Reinterpretation. Designed for those who treat life as the ultimate adventure, the Seiko Prospex line meets every challenge with technological excellence and style. Part of a rich legacy of innovation in high-intensity timekeeping, Prospex continues to celebrate a long history of sports watch excellence with recreations and reinterpretations of landmark achievements. Honoring the first watch designed to withstand the dangerous world of professional diving, Seiko’s 1975 saturation diver, with its one-piece case, outer shroud, and revolutionary L-shaped protective gasket, this extraordinary reinterpretation retains the solid can-like lines and functionality of the original, improved with upgraded specifications and materials. Following ISO standards for diving to depths of up to 1,000 meters, this powerful saturation diver features a one-piece inner case in light and durable titanium, as well as a ceramic outer case. The one-way rotating elapsed timing bezel is crafted of stainless steel with a black super-hard coating. Arrow-shaped minute hands, simple geometric indices, narrower bezel markers, and LumiBrite enhancement offer sharper legibility, while the sapphire crystal provides improved scratch resistance. With a secure screw-down crown, silicone strap, and day/date calendar, this updated design is powered by a unique extended-life quartz battery with increased torque, engineered specifically for diver’s watches. 1,000m Water Resistant.

Category: PROSPEX





Reference number: S23631
Collection: Prospex
Gender: Men’s
Dial color: Black
Case size: 49.4 mm
Case material: Ceramic outer, titanium monobloc inner
Case color: Black
Case thickness: 16.3 mm
Crystal: Sapphire crystal with anti-reflective coating on the inner surface
Water Resistance: 1,000 meters (3,300 feet); follows ISO standards and is suitable for saturation diving


Strap type: Silicone
Strap color: Black
Closure: Regular buckle


Caliber 7C46
5 years battery life

Key Features

Riki Watanabe design
Black one-way rotating elapsed timing bezel
Day/date calendar
LumiBrite hands and markers


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