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Prospex Saturation Diver. Designed for those who treat life as the ultimate adventure, the Seiko Prospex line follows every challenge with technological excellence and style.

Appropriate for saturation diving under ISO standards, with one-piece case and screwdown crown, this high-intensity watch features a stainless steel case and bracelet with super hard coating and tri-fold clasp with push button release and extender, along with an additional silicone strap. Framed by a ceramic one way rotating elapsed timing bezel, the black dial includes a date calendar and LumiBrite hands and markers, and is topped by a sapphire crystal with anti-reflective coating on the inner surface. The 26-jewel automatic movement beats at a frequency of 28,800 vibrations per hour, with a power reserve of approximately 50 hours, and can be wound manually or automatically. 300m Water Resistant.


  • Product Number: 450018188212
  • Model Number: SLA023
  • Collection: Prospex
  • Movement: Automatic
  • Case Material: Stainless Steel
  • Case Thickness: 15.4 mm
  • Case Size: 44.3 mm
  • Watch Crystal: Sapphire with anti-reflective coating on inner surface
  • Dial Color: Blue
  • Caseback: Plain, stainless steel
  • Bracelet: Stainless Steel
  • Clasp: Three-fold clasp with Secure Lock & push button release, solid & slide adjuster
  • Water Resistance: 300 metres / 30 ATM
  • Functions: Hours, minutes, seconds, date, stop seconds hand function
  • Power Reserve: 50 hours
  • Complication: Date
  • Bezel: Unidirectional rotating
  • Warranty:

    3-year warranty

  • Case Material: Stainless Steel
  • Case Size: 44.3 mm
  • Case Thickness: 15.4 mm
  • Caseback: Plain, stainless steel
  • Dial Color: Blue
  • Bezel: Unidirectional rotating
  • Watch Crystal: Sapphire with anti-reflective coating on inner surface
  • Movement: Automatic
  • Complication: Date
  • Power Reserve: 50 hours
  • Functions: Hours, minutes, seconds, date, stop seconds hand function
  • Clasp: Three-fold clasp with Secure Lock & push button release, solid & slide adjuster
  • Bracelet: Stainless Steel
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Seiko

Seiko Prospex Sea Marinemaster Diver Automatic 44 mm Stainless Steel

Prospex Sea Marinemaster Diver Automatic 44 mm Stainless Steel
Estimated Price:
$ 3,895
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*This item is on order. This ring will be crafted just for you.
Contact an expert to confirm the delivery timeline.

All images shown are for illustration purposes only. Actual product may vary. Birks reserves the right to change the font, size and text orientation depending on the engraving message for best result.

Please note the estimated time for our engraving services is 7 to 10 business days. Engraved items are final sale.

Prospex Saturation Diver. Designed for those who treat life as the ultimate adventure, the Seiko Prospex line follows every challenge with technological excellence and style.

Appropriate for saturation diving under ISO standards, with one-piece case and screwdown crown, this high-intensity watch features a stainless steel case and bracelet with super hard coating and tri-fold clasp with push button release and extender, along with an additional silicone strap. Framed by a ceramic one way rotating elapsed timing bezel, the black dial includes a date calendar and LumiBrite hands and markers, and is topped by a sapphire crystal with anti-reflective coating on the inner surface. The 26-jewel automatic movement beats at a frequency of 28,800 vibrations per hour, with a power reserve of approximately 50 hours, and can be wound manually or automatically. 300m Water Resistant.


  • Product Number: 450018188212
  • Model Number: SLA023
  • Collection: Prospex
  • Movement: Automatic
  • Case Material: Stainless Steel
  • Case Thickness: 15.4 mm
  • Case Size: 44.3 mm
  • Watch Crystal: Sapphire with anti-reflective coating on inner surface
  • Dial Color: Blue
  • Caseback: Plain, stainless steel
  • Bracelet: Stainless Steel
  • Clasp: Three-fold clasp with Secure Lock & push button release, solid & slide adjuster
  • Water Resistance: 300 metres / 30 ATM
  • Functions: Hours, minutes, seconds, date, stop seconds hand function
  • Power Reserve: 50 hours
  • Complication: Date
  • Bezel: Unidirectional rotating
  • Warranty:

    3-year warranty

  • Case Material: Stainless Steel
  • Case Size: 44.3 mm
  • Case Thickness: 15.4 mm
  • Caseback: Plain, stainless steel
  • Dial Color: Blue
  • Bezel: Unidirectional rotating
  • Watch Crystal: Sapphire with anti-reflective coating on inner surface
  • Movement: Automatic
  • Complication: Date
  • Power Reserve: 50 hours
  • Functions: Hours, minutes, seconds, date, stop seconds hand function
  • Clasp: Three-fold clasp with Secure Lock & push button release, solid & slide adjuster
  • Bracelet: Stainless Steel
View More Details
View Fewer Details

Prospex Saturation Diver. Designed for those who treat life as the ultimate adventure, the Seiko Prospex line follows every challenge with technological excellence and style.

Appropriate for saturation diving under ISO standards, with one-piece case and screwdown crown, this high-intensity watch features a stainless steel case and bracelet with super hard coating and tri-fold clasp with push button release and extender, along with an additional silicone strap. Framed by a ceramic one way rotating elapsed timing bezel, the black dial includes a date calendar and LumiBrite hands and markers, and is topped by a sapphire crystal with anti-reflective coating on the inner surface. The 26-jewel automatic movement beats at a frequency of 28,800 vibrations per hour, with a power reserve of approximately 50 hours, and can be wound manually or automatically. 300m Water Resistant.


  • Product Number: 450018188212
  • Model Number: SLA023
  • Collection: Prospex
  • Movement: Automatic
  • Case Material: Stainless Steel
  • Case Thickness: 15.4 mm
  • Case Size: 44.3 mm
  • Watch Crystal: Sapphire with anti-reflective coating on inner surface
  • Dial Color: Blue
  • Caseback: Plain, stainless steel
  • Bracelet: Stainless Steel
  • Clasp: Three-fold clasp with Secure Lock & push button release, solid & slide adjuster
  • Water Resistance: 300 metres / 30 ATM
  • Functions: Hours, minutes, seconds, date, stop seconds hand function
  • Power Reserve: 50 hours
  • Complication: Date
  • Bezel: Unidirectional rotating
  • Warranty:

    3-year warranty

  • Case Material: Stainless Steel
  • Case Size: 44.3 mm
  • Case Thickness: 15.4 mm
  • Caseback: Plain, stainless steel
  • Dial Color: Blue
  • Bezel: Unidirectional rotating
  • Watch Crystal: Sapphire with anti-reflective coating on inner surface
  • Movement: Automatic
  • Complication: Date
  • Power Reserve: 50 hours
  • Functions: Hours, minutes, seconds, date, stop seconds hand function
  • Clasp: Three-fold clasp with Secure Lock & push button release, solid & slide adjuster
  • Bracelet: Stainless Steel
View More Details
View Fewer Details

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