About the watch
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.
- Movement
- automatic
- Caliber
- Seiko 8L45
- Case size
- 42.6mm
- Case thickness
- 14.1mm
- Case material
- Stainless steel
- Complications
- date, stop-seconds, unidirectional rotating bezel
- Crystal
- sapphire
- Dial colour
- Blue
- Limited edition
- Yes
- Lug width
- 20mm
- Water resistance
- 300m / 30 ATM
- Release year
- 2026
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