
SPECIFICATIONS
Movementautomatic
CaliberSeiko 8L45
Case size42.6mm
Case materialStainless steel
Thickness14.1mm
Lug width20mm
Water resistance300m / 30 ATM
Crystalsapphire
Dial colorBlue
Complicationsdate, stop-seconds, unidirectional rotating bezel
Limited ed.Yes
Release year2026
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The HBF002J1 is a modern, high-spec reinterpretation of Seiko’s 1968 professional diver, combining the hand-assembled 8L45 movement with a 300-metre-rated case and dual-curved sapphire crystal. Its JAMSTEC association, blue ceramic-bezel design, engraved limited-edition caseback, and strictly numbered production of 1,000 make it a notably scarce 2026 Marinemaster variant.
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