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Seiko Prospex Sea PADI Automatic 45 mm Stainless Steel - Special Edition image number 0 Seiko Prospex Sea PADI Automatic 45 mm Stainless Steel - Special Edition image number 1 Seiko Prospex Sea PADI Automatic 45 mm Stainless Steel - Special Edition image number 2 Seiko Prospex Sea PADI Automatic 45 mm Stainless Steel - Special Edition image number 3
Seiko Prospex Sea PADI Automatic 45 mm Stainless Steel - Special Edition image number 0 Seiko Prospex Sea PADI Automatic 45 mm Stainless Steel - Special Edition image number 1 Seiko Prospex Sea PADI Automatic 45 mm Stainless Steel - Special Edition image number 2 Seiko Prospex Sea PADI Automatic 45 mm Stainless Steel - Special Edition 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.


  • Product Number: 450020320426
  • Model Number: SPB375
  • Collection: Prospex
  • Subcollection: Sea
  • Movement: Automatic
  • Dial Colour/Material: Blue
  • Case Size: 45 mm
  • Case Material: Stainless Steel
  • Bracelet: Stainless Steel
  • Complication: Date
  • Watch features: Limited edition
  • Warranty:

    3-year warranty
  • Case Thickness: 13.4 mm
  • Caseback: Engraved, Stainless Steel
  • Bezel: Unidirectional rotating, ceramic
  • Watch Crystal: Sapphire crystal with anti-reflective coating on the inner surface
  • Clasp: Three-fold clasp with push button release, secure lock and extender
  • Calibre: 6R35
  • Power Reserve: 70 hours
  • Functions: Hours, minutes, seconds, date, stop seconds hand function, lumiBrite on hands, index(es) and bezel
  • Water Resistance: 200 metres / 20 ATM
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VALENTINE'S DAY SHIPPING POLICY

Order by Monday, February 9th for delivery by February 14th, 2026. For orders with engraving, order before January 26th for delivery by February 14th, 2026.*

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.

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 PADI Automatic 45 mm Stainless Steel - Special Edition

Prospex Sea PADI Automatic 45 mm Stainless Steel - Special Edition
Estimated Price:
$ 1,625
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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.

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.


  • Product Number: 450020320426
  • Model Number: SPB375
  • Collection: Prospex
  • Subcollection: Sea
  • Movement: Automatic
  • Dial Colour/Material: Blue
  • Case Size: 45 mm
  • Case Material: Stainless Steel
  • Bracelet: Stainless Steel
  • Complication: Date
  • Watch features: Limited edition
  • Warranty:

    3-year warranty
  • Case Thickness: 13.4 mm
  • Caseback: Engraved, Stainless Steel
  • Bezel: Unidirectional rotating, ceramic
  • Watch Crystal: Sapphire crystal with anti-reflective coating on the inner surface
  • Clasp: Three-fold clasp with push button release, secure lock and extender
  • Calibre: 6R35
  • Power Reserve: 70 hours
  • Functions: Hours, minutes, seconds, date, stop seconds hand function, lumiBrite on hands, index(es) and bezel
  • Water Resistance: 200 metres / 20 ATM
View More Details
View Fewer Details

VALENTINE'S DAY SHIPPING POLICY

Order by Monday, February 9th for delivery by February 14th, 2026. For orders with engraving, order before January 26th for delivery by February 14th, 2026.*

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.

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.


  • Product Number: 450020320426
  • Model Number: SPB375
  • Collection: Prospex
  • Subcollection: Sea
  • Movement: Automatic
  • Dial Colour/Material: Blue
  • Case Size: 45 mm
  • Case Material: Stainless Steel
  • Bracelet: Stainless Steel
  • Complication: Date
  • Watch features: Limited edition
  • Warranty:

    3-year warranty
  • Case Thickness: 13.4 mm
  • Caseback: Engraved, Stainless Steel
  • Bezel: Unidirectional rotating, ceramic
  • Watch Crystal: Sapphire crystal with anti-reflective coating on the inner surface
  • Clasp: Three-fold clasp with push button release, secure lock and extender
  • Calibre: 6R35
  • Power Reserve: 70 hours
  • Functions: Hours, minutes, seconds, date, stop seconds hand function, lumiBrite on hands, index(es) and bezel
  • Water Resistance: 200 metres / 20 ATM
View More Details
View Fewer Details

VALENTINE'S DAY SHIPPING POLICY

Order by Monday, February 9th for delivery by February 14th, 2026. For orders with engraving, order before January 26th for delivery by February 14th, 2026.*

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.

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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