



Seiko Marinemaster 1965 Heritage Diver SJE117 Automatic Watch
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The Seiko Prospex Marinemaster SJE117 commemorates Japan's first diver's watch from 1965, marking the beginning of Seiko's six-decade mastery of underwater timekeeping.
This modern reinterpretation achieves something remarkable: it's Seiko's thinnest mechanical diver at just 12.3mm, yet maintains 200-meter water resistance and ISO diving certification. The grayish-green dial, textured with horizontal striping, evokes both vintage appeal and contemporary aesthetics. What distinguishes this Marinemaster is its exhibition caseback, the first on any Seiko diver's watch. This transparent window reveals Caliber 6L37, a slimline 26-jewel automatic movement beating at 28,800 vibrations per hour. With 45 hours of power reserve and manual winding capability, this movement delivers the precision expected from Seiko's higher-tier offerings. The visible finishing demonstrates craftsmanship that typically remains hidden, allowing owners to appreciate the mechanical artistry at work.
The 39.5mm stainless steel case features elegantly chamfered edges and super-hard coating for enhanced durability. Mirror-finished surfaces prevent equipment snagging while creating sophisticated light play. The box-shaped sapphire crystal with anti-reflective coating provides vintage character alongside modern clarity, and the unidirectional bezel operates with precise, reassuring clicks. The entirely new bracelet design incorporates ellipse-shaped links with dual-curved surfaces, creating exceptional flexibility and comfort. LumiBrite hands and markers ensure legibility, while the date window at 4:30 maintains balance. Each watch arrives in a special collector's box, acknowledging this model's significance within Seiko's heritage.
The Seiko Prospex Marinemaster SJE117 commemorates Japan's first diver's watch from 1965, marking the beginning of Seiko's six-decade mastery of underwater timekeeping.
This modern reinterpretation achieves something remarkable: it's Seiko's thinnest mechanical diver at just 12.3mm, yet maintains 200-meter water resistance and ISO diving certification. The grayish-green dial, textured with horizontal striping, evokes both vintage appeal and contemporary aesthetics. What distinguishes this Marinemaster is its exhibition caseback, the first on any Seiko diver's watch. This transparent window reveals Caliber 6L37, a slimline 26-jewel automatic movement beating at 28,800 vibrations per hour. With 45 hours of power reserve and manual winding capability, this movement delivers the precision expected from Seiko's higher-tier offerings. The visible finishing demonstrates craftsmanship that typically remains hidden, allowing owners to appreciate the mechanical artistry at work.
The 39.5mm stainless steel case features elegantly chamfered edges and super-hard coating for enhanced durability. Mirror-finished surfaces prevent equipment snagging while creating sophisticated light play. The box-shaped sapphire crystal with anti-reflective coating provides vintage character alongside modern clarity, and the unidirectional bezel operates with precise, reassuring clicks. The entirely new bracelet design incorporates ellipse-shaped links with dual-curved surfaces, creating exceptional flexibility and comfort. LumiBrite hands and markers ensure legibility, while the date window at 4:30 maintains balance. Each watch arrives in a special collector's box, acknowledging this model's significance within Seiko's heritage.
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Frequently Asked Questions
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