Seiko / Seiko Prospex Watches / Seiko Marinemaster 1965 Heritage Diver SJE117 Automatic Watch
Seiko Marinemaster 1965 Heritage Diver SJE117 Automatic Watch
Seiko Marinemaster 1965 Heritage Diver SJE117 Automatic Watch
Seiko Marinemaster 1965 Heritage Diver SJE117 Automatic Watch
Seiko Marinemaster 1965 Heritage Diver SJE117 Automatic Watch
Seiko Marinemaster 1965 Heritage Diver SJE117 Automatic Watch
Seiko Marinemaster 1965 Heritage Diver SJE117 Automatic Watch
Seiko Marinemaster 1965 Heritage Diver SJE117 Automatic Watch
Seiko Marinemaster 1965 Heritage Diver SJE117 Automatic Watch

Seiko Marinemaster 1965 Heritage Diver SJE117 Automatic Watch

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Seiko Marinemaster 1965 Heritage Diver SJE117 Automatic Watch

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.

  • Prospex Marinemaster 1965 Heritage Diver's Watch
  • Part of the first globally available series to bear the "Marinemaster" name
  • Inspired by Seiko's first diver's watch from 1965
  • Slimline mechanical diver's watch
  • Automatic with manual winding capability
  • Black uni-directional rotating elapsed timing bezel
  • Light grayish-green patterned dial
  • LumiBrite hands and markers
  • See-through screwdown caseback
  • Screwdown crown
  • Tri-fold push button release clasp with secure lock and extender
  • Packaged in a collectors’ box

Movement

  • Type: Automatic
  • Caliber: 6L37
  • Vibrations: 28,800 vibrations per hour
  • Jewels: 26 jewels
  • Power Reserve: Approximately 45 hours

Case Dimensions

  • Material: Stainless steel case with super-hard coating
  • Diameter: 39.5 mm
  • Thickness: 12.3 mm
  • Length: 47.2 mm

Other

  • Crystal Material: Box-shaped sapphire crystal with anti-reflective coating on the inner surface
  • Water Resistance: 200 meters (660 feet), follows ISO standards and is suitable for scuba diving
  • Dial Color: Green
  • Strap: Flexible double curved stainless steel bracelet with super-hard coating
  • Lug Width: 20 mm
Seiko Marinemaster 1965 Heritage Diver SJE117 Automatic Watch

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.

  • Prospex Marinemaster 1965 Heritage Diver's Watch
  • Part of the first globally available series to bear the "Marinemaster" name
  • Inspired by Seiko's first diver's watch from 1965
  • Slimline mechanical diver's watch
  • Automatic with manual winding capability
  • Black uni-directional rotating elapsed timing bezel
  • Light grayish-green patterned dial
  • LumiBrite hands and markers
  • See-through screwdown caseback
  • Screwdown crown
  • Tri-fold push button release clasp with secure lock and extender
  • Packaged in a collectors’ box

Movement

  • Type: Automatic
  • Caliber: 6L37
  • Vibrations: 28,800 vibrations per hour
  • Jewels: 26 jewels
  • Power Reserve: Approximately 45 hours

Case Dimensions

  • Material: Stainless steel case with super-hard coating
  • Diameter: 39.5 mm
  • Thickness: 12.3 mm
  • Length: 47.2 mm

Other

  • Crystal Material: Box-shaped sapphire crystal with anti-reflective coating on the inner surface
  • Water Resistance: 200 meters (660 feet), follows ISO standards and is suitable for scuba diving
  • Dial Color: Green
  • Strap: Flexible double curved stainless steel bracelet with super-hard coating
  • Lug Width: 20 mm

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Frequently Asked Questions

We take all jewelry and watches in for review and estimation before beginning any work; the review is complimentary and we will always approve estimates with you before we begin any work.

We cannot give price estimates over the phone or online, as every piece can var

We have a team of expert goldsmiths and jewelers on site, and can work on a large range of repair needs.

Common repairs include ring sizing, polishing, rhodium plating, adjusting chain length, replacing clasps, re-stringing services, and more.

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Articles are accepted for credit or exchange in the U.S. if returned in salable condition within 30 days, accompanied by a sales receipt. Some exclusions may apply.