Seiko Marinemaster 1968 Heritage Diver SLA079 300m Automatic Watch
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The Seiko Prospex Marinemaster SLA079 reimagines the legendary 1968 professional diver that established Seiko's reputation for uncompromising tool watches.
That original timepiece represented a quantum leap: 300-meter water resistance, a high-beat movement, and robust construction that professional divers trusted with their lives. This modern interpretation honors that heritage while incorporating five decades of technological refinement. The 42.6mm stainless steel case, treated with super-hard coating, features the distinctive cushion shape that collectors immediately recognize. Its mirror-polished surfaces remain faithful to the 1968 design, creating distortion-free reflections that enhance both aesthetics and functionality.
Deep knurling on the unidirectional rotating bezel and screwdown crown provides secure grip even with gloved hands or in wet conditions. The uniquely textured black dial balances professional legibility with subtle luxury, while LumiBrite coating on the hands, markers, and bezel ensures visibility when natural light fades. Caliber 8L35 powers this timepiece with purpose-built precision. Hand-assembled at Seiko's Shizukuishi Watch Studio in northern Japan, this 26-jewel automatic movement beats at 28,800 vibrations per hour and delivers approximately 50 hours of power reserve. Its enhanced torque meets the demanding requirements of a true diver's watch, while the date window at 4:30 preserves dial symmetry. The dual-curved sapphire crystal with anti-reflective coating maintains clarity from any angle, and the ISO-compliant construction certifies this watch for serious diving to 300 meters. The bracelet includes both a secure lock and extender, allowing adjustment over a wetsuit.
The Seiko Prospex Marinemaster SLA079 reimagines the legendary 1968 professional diver that established Seiko's reputation for uncompromising tool watches.
That original timepiece represented a quantum leap: 300-meter water resistance, a high-beat movement, and robust construction that professional divers trusted with their lives. This modern interpretation honors that heritage while incorporating five decades of technological refinement. The 42.6mm stainless steel case, treated with super-hard coating, features the distinctive cushion shape that collectors immediately recognize. Its mirror-polished surfaces remain faithful to the 1968 design, creating distortion-free reflections that enhance both aesthetics and functionality.
Deep knurling on the unidirectional rotating bezel and screwdown crown provides secure grip even with gloved hands or in wet conditions. The uniquely textured black dial balances professional legibility with subtle luxury, while LumiBrite coating on the hands, markers, and bezel ensures visibility when natural light fades. Caliber 8L35 powers this timepiece with purpose-built precision. Hand-assembled at Seiko's Shizukuishi Watch Studio in northern Japan, this 26-jewel automatic movement beats at 28,800 vibrations per hour and delivers approximately 50 hours of power reserve. Its enhanced torque meets the demanding requirements of a true diver's watch, while the date window at 4:30 preserves dial symmetry. The dual-curved sapphire crystal with anti-reflective coating maintains clarity from any angle, and the ISO-compliant construction certifies this watch for serious diving to 300 meters. The bracelet includes both a secure lock and extender, allowing adjustment over a wetsuit.
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