Product Images

Seiko Prospex Sea Automatic GMT42 mm Stainless Steel image number 0 Seiko Prospex Sea Automatic GMT42 mm Stainless Steel image number 1 Seiko Prospex Sea Automatic GMT42 mm Stainless Steel image number 2 Seiko Prospex Sea Automatic GMT42 mm Stainless Steel image number 3
Seiko Prospex Sea Automatic GMT42 mm Stainless Steel image number 0 Seiko Prospex Sea Automatic GMT42 mm Stainless Steel image number 1 Seiko Prospex Sea Automatic GMT42 mm Stainless Steel image number 2 Seiko Prospex Sea Automatic GMT42 mm Stainless Steel image number 3

Seiko Prospex challenges every limit, with a collection of timepieces for sports lovers and adventure seekers whether in the water, in the sky or on land. Since launching Japan’s first diver’s watch in 1965, Seiko’s innovative technology has changed global standards. We are constantly striving to bring ever greater reliability and safety to both professional and recreational divers.

A premium diver’s GMT watch inspired by a marine-sport lifestyle. A refreshing combination of blue and white. Inspired by a lifestyle steeped in marine sports, the watch has a blue ceramic bezel and silvery white dial to create a fresh and clean appearance. Endowed with updated functionality.

The 1968 Heritage Diver’s GMT Watch is powered by the Caliber 6R54, which features a GMT function that allows it to display the time in two different time zones. The watch’s specifications have been enhanced to offer 300-meter water resistance. A new clasp designed for comfort and operability. The new clasp can be adjusted in six steps, each measuring about 2.5mm, for a total range of approximately 15mm. This marks the first time that this clasp has been adopted in a non-limited-edition model. It allows for a comfortable fit at all times, accommodating changes in wrist size during diving and daily life.


  • Product Number: 450020320341
  • Model Number: SPB519
  • Collection: Prospex
  • Subcollection: Sea
  • Movement: Automatic
  • Dial Colour/Material: White
  • Case Size: 42 mm
  • Case Material: Stainless Steel
  • Bracelet: Stainless Steel
  • Complication: GMT
  • Warranty:

    3-year warranty
  • Case Thickness: 13.3 mm
  • Caseback: Plain, Stainless Steel
  • Bezel: Unidirectional, Rotating
  • Watch Crystal: Sapphire crystal with anti-reflective coating on the inner surface
  • Clasp: Three-fold clasp with push button release, secure lock, solid and slide adjuster
  • Calibre: 6R54
  • Power Reserve: 72 hours
  • Functions: Hours, minutes, seconds, 24-hour hand (dual-time display function), stop-seconds function, lumiBrite on hands, index(es), and bezel
  • Water Resistance: 300 metres / 30 ATM
View More Details
View Fewer Details

SHIPPING

Enjoy free standard shipping within Canada. To ensure the satisfaction of parcel reception, all our packages require signature upon delivery. The estimated delivery time is 2 to 5 days business days. For more information, click here.

EXTENDED HOLIDAY RETURN POLICY

For all regular-priced merchandise purchased online at MaisonBirks.com or in a Maison Birks or Birks Royalmount store from December 1st - 13th, 2025, returns and exchanges will be accepted until January 14th, 2026.

RETURNS

Maison Birks will provide an exchange or refund within 30 days of delivery for select regular-priced merchandise, provided merchandise has not been worn, altered, engraved, or special-ordered. All claims, returns, battery replacement, or warranty service must be accompanied by proof of purchase, original packaging and warranty materials. All returns are subject to a quality inspection to ensure the merchandise meets our return policy criteria. All merchandise purchased with cryptocurrency is final sale. For more information, click here.

Seiko

Seiko Prospex Sea Automatic GMT42 mm Stainless Steel

Prospex Sea Automatic GMT42 mm Stainless Steel
Estimated Price:
$ 2,395
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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.

Once adjusted Tudor watches are final sale.

Note that in store (after sale) adjustments to your Tudor watch is available exclusively in Official Tudor Maison Birks locations.

Seiko Prospex challenges every limit, with a collection of timepieces for sports lovers and adventure seekers whether in the water, in the sky or on land. Since launching Japan’s first diver’s watch in 1965, Seiko’s innovative technology has changed global standards. We are constantly striving to bring ever greater reliability and safety to both professional and recreational divers.

A premium diver’s GMT watch inspired by a marine-sport lifestyle. A refreshing combination of blue and white. Inspired by a lifestyle steeped in marine sports, the watch has a blue ceramic bezel and silvery white dial to create a fresh and clean appearance. Endowed with updated functionality.

The 1968 Heritage Diver’s GMT Watch is powered by the Caliber 6R54, which features a GMT function that allows it to display the time in two different time zones. The watch’s specifications have been enhanced to offer 300-meter water resistance. A new clasp designed for comfort and operability. The new clasp can be adjusted in six steps, each measuring about 2.5mm, for a total range of approximately 15mm. This marks the first time that this clasp has been adopted in a non-limited-edition model. It allows for a comfortable fit at all times, accommodating changes in wrist size during diving and daily life.


  • Product Number: 450020320341
  • Model Number: SPB519
  • Collection: Prospex
  • Subcollection: Sea
  • Movement: Automatic
  • Dial Colour/Material: White
  • Case Size: 42 mm
  • Case Material: Stainless Steel
  • Bracelet: Stainless Steel
  • Complication: GMT
  • Warranty:

    3-year warranty
  • Case Thickness: 13.3 mm
  • Caseback: Plain, Stainless Steel
  • Bezel: Unidirectional, Rotating
  • Watch Crystal: Sapphire crystal with anti-reflective coating on the inner surface
  • Clasp: Three-fold clasp with push button release, secure lock, solid and slide adjuster
  • Calibre: 6R54
  • Power Reserve: 72 hours
  • Functions: Hours, minutes, seconds, 24-hour hand (dual-time display function), stop-seconds function, lumiBrite on hands, index(es), and bezel
  • Water Resistance: 300 metres / 30 ATM
View More Details
View Fewer Details

SHIPPING

Enjoy free standard shipping within Canada. To ensure the satisfaction of parcel reception, all our packages require signature upon delivery. The estimated delivery time is 2 to 5 days business days. For more information, click here.

EXTENDED HOLIDAY RETURN POLICY

For all regular-priced merchandise purchased online at MaisonBirks.com or in a Maison Birks or Birks Royalmount store from December 1st - 13th, 2025, returns and exchanges will be accepted until January 14th, 2026.

RETURNS

Maison Birks will provide an exchange or refund within 30 days of delivery for select regular-priced merchandise, provided merchandise has not been worn, altered, engraved, or special-ordered. All claims, returns, battery replacement, or warranty service must be accompanied by proof of purchase, original packaging and warranty materials. All returns are subject to a quality inspection to ensure the merchandise meets our return policy criteria. All merchandise purchased with cryptocurrency is final sale. For more information, click here.

Seiko Prospex challenges every limit, with a collection of timepieces for sports lovers and adventure seekers whether in the water, in the sky or on land. Since launching Japan’s first diver’s watch in 1965, Seiko’s innovative technology has changed global standards. We are constantly striving to bring ever greater reliability and safety to both professional and recreational divers.

A premium diver’s GMT watch inspired by a marine-sport lifestyle. A refreshing combination of blue and white. Inspired by a lifestyle steeped in marine sports, the watch has a blue ceramic bezel and silvery white dial to create a fresh and clean appearance. Endowed with updated functionality.

The 1968 Heritage Diver’s GMT Watch is powered by the Caliber 6R54, which features a GMT function that allows it to display the time in two different time zones. The watch’s specifications have been enhanced to offer 300-meter water resistance. A new clasp designed for comfort and operability. The new clasp can be adjusted in six steps, each measuring about 2.5mm, for a total range of approximately 15mm. This marks the first time that this clasp has been adopted in a non-limited-edition model. It allows for a comfortable fit at all times, accommodating changes in wrist size during diving and daily life.


  • Product Number: 450020320341
  • Model Number: SPB519
  • Collection: Prospex
  • Subcollection: Sea
  • Movement: Automatic
  • Dial Colour/Material: White
  • Case Size: 42 mm
  • Case Material: Stainless Steel
  • Bracelet: Stainless Steel
  • Complication: GMT
  • Warranty:

    3-year warranty
  • Case Thickness: 13.3 mm
  • Caseback: Plain, Stainless Steel
  • Bezel: Unidirectional, Rotating
  • Watch Crystal: Sapphire crystal with anti-reflective coating on the inner surface
  • Clasp: Three-fold clasp with push button release, secure lock, solid and slide adjuster
  • Calibre: 6R54
  • Power Reserve: 72 hours
  • Functions: Hours, minutes, seconds, 24-hour hand (dual-time display function), stop-seconds function, lumiBrite on hands, index(es), and bezel
  • Water Resistance: 300 metres / 30 ATM
View More Details
View Fewer Details

SHIPPING

Enjoy free standard shipping within Canada. To ensure the satisfaction of parcel reception, all our packages require signature upon delivery. The estimated delivery time is 2 to 5 days business days. For more information, click here.

EXTENDED HOLIDAY RETURN POLICY

For all regular-priced merchandise purchased online at MaisonBirks.com or in a Maison Birks or Birks Royalmount store from December 1st - 13th, 2025, returns and exchanges will be accepted until January 14th, 2026.

RETURNS

Maison Birks will provide an exchange or refund within 30 days of delivery for select regular-priced merchandise, provided merchandise has not been worn, altered, engraved, or special-ordered. All claims, returns, battery replacement, or warranty service must be accompanied by proof of purchase, original packaging and warranty materials. All returns are subject to a quality inspection to ensure the merchandise meets our return policy criteria. All merchandise purchased with cryptocurrency is final sale. For more information, click here.

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