Seiko Prospex Seigaiha-Inspired U.S. Men’s Watch – SLA053



Prospex Seigaiha-Inspired U.S. Limited Edition. 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 over 60 years of sports watch excellence with recreations and reinterpretations of landmark achievements. This U.S. Special Edition, available only in a limited edition of 500, with each caseback engraved to show the watch’s position in a controlled-production run, celebrates the “seigaiha” or “blue ocean waves” pattern, deriving from an ancient Japanese tradition as a symbol of peace, good luck, and good fortune. The intense blue dial and the deep black of the high-performance one-piece stainless steel case with black hard coating evoke the ocean under the moonlight. Following ISO standards for saturation diving at depths of up to 300 meters, this exceptional timepiece is powered by a 26-jewel caliber 8L35 automatic movement, assembled expressly for diver’s watches at the Shizukuishi Watch Studio, with the increased torque necessary for the most challenging dives. This mechanical movement beats at a frequency of 28,800 vibrations per hour, with a power reserve of approximately 50 hours, and offers manual winding capability. For enhanced legibility, the hands and markers feature LumiBrite coating, with LumiBrite accents on the black ceramic uni-directional elapsed timing bezel. With an anti-reflective sapphire crystal, date window, and screw-down crown, this high-intensity timepiece includes a black silicone strap and is packaged in a special collectors box. 300m Water Resistant





Reference number: SLA053
Collection: Prospex
Gender: Men’s
Dial color: Blue
Case size: 44.3 mm
Case material: High-performance one-piece stainless steel
Case color: Black
Case thickness: 15.4mm
Crystal: Sapphire crystal with anti-reflective coating on the inner surface
Water Resistance: 300 meters (1,000 feet), follows ISO standards and is suitable for saturation diving


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


Automatic with the manual winding capability
Caliber 8L35
Power reserve: approximately 50 hours
28,800 vibrations per hour
26 jewels

Key Features

Prospex Seigaiha-Inspired U.S. Limited Edition
Limited edition of 500
Production serial number engraved on caseback
Date calendar
Automatic Saturation Diver
LumiBrite hands and markers
Black ceramic uni-directional rotating elapsed timing bezel with LumiBrite accents
Screwdown crown
Packaged in a special collectors’ box
Intense blue dial representing the ocean under the moonlight in the “Seigaiha” or “blue ocean waves” pattern symbolic of peace, good luck, and good fortune


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