Product Images

Grand Seiko Heritage Spring Drive 40 mm Steel SBGA439 Front image number 0
An archetypal Grand Seiko design with a dial in midnight blue.

A moonlit sky at night has a tantalizing and ever-changing hue which is captured perfectly in this midnight blue dial.

Thanks to Grand Seiko’s unique Spring Drive movement, the seconds hand glides silently and smoothly, with no “tick”, across the dial, perfectly reflecting the natural and continuous flow of time. The power reserve is 72 hours when fully wound and is shown on the discreet indicator next to the eight o’clock index.


  • Product Number: 450016668327
  • Model Number: SBGA439
  • Movement: Automatic
  • Dial Colour/Material: Blue
  • Case Size: 40 mm
  • Case Material: Stainless Steel
  • Bracelet: Stainless Steel
  • Warranty: 5 years
  • Case Thickness: 12.3 mm
  • Watch Crystal: Dual-curved sapphire with anti-reflective coating on the inner surface
  • Clasp: Three-fold clasp with push button release
  • Power Reserve: 72 hours
  • Functions: Hours, Minutes, Seconds, Date, 24-hour hand (dual time display function), Power reserve indicator, Calendar-linked time difference adjustment function
  • Water Resistance: 100 metres / 10 ATM
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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

All watches purchased on MaisonBirks.com can only be returned or exchanged by mail within 30 days of delivery, 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.

Grand Seiko

Grand Seiko Heritage Spring Drive 40 mm Stainless Steel

Heritage Spring Drive 40 mm Stainless Steel
Estimated Price:
$ 6,800
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*This item is on order. This ring will be crafted just for you.
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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.

An archetypal Grand Seiko design with a dial in midnight blue.

A moonlit sky at night has a tantalizing and ever-changing hue which is captured perfectly in this midnight blue dial.

Thanks to Grand Seiko’s unique Spring Drive movement, the seconds hand glides silently and smoothly, with no “tick”, across the dial, perfectly reflecting the natural and continuous flow of time. The power reserve is 72 hours when fully wound and is shown on the discreet indicator next to the eight o’clock index.


  • Product Number: 450016668327
  • Model Number: SBGA439
  • Movement: Automatic
  • Dial Colour/Material: Blue
  • Case Size: 40 mm
  • Case Material: Stainless Steel
  • Bracelet: Stainless Steel
  • Warranty: 5 years
  • Case Thickness: 12.3 mm
  • Watch Crystal: Dual-curved sapphire with anti-reflective coating on the inner surface
  • Clasp: Three-fold clasp with push button release
  • Power Reserve: 72 hours
  • Functions: Hours, Minutes, Seconds, Date, 24-hour hand (dual time display function), Power reserve indicator, Calendar-linked time difference adjustment function
  • Water Resistance: 100 metres / 10 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

All watches purchased on MaisonBirks.com can only be returned or exchanged by mail within 30 days of delivery, 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.

An archetypal Grand Seiko design with a dial in midnight blue.

A moonlit sky at night has a tantalizing and ever-changing hue which is captured perfectly in this midnight blue dial.

Thanks to Grand Seiko’s unique Spring Drive movement, the seconds hand glides silently and smoothly, with no “tick”, across the dial, perfectly reflecting the natural and continuous flow of time. The power reserve is 72 hours when fully wound and is shown on the discreet indicator next to the eight o’clock index.


  • Product Number: 450016668327
  • Model Number: SBGA439
  • Movement: Automatic
  • Dial Colour/Material: Blue
  • Case Size: 40 mm
  • Case Material: Stainless Steel
  • Bracelet: Stainless Steel
  • Warranty: 5 years
  • Case Thickness: 12.3 mm
  • Watch Crystal: Dual-curved sapphire with anti-reflective coating on the inner surface
  • Clasp: Three-fold clasp with push button release
  • Power Reserve: 72 hours
  • Functions: Hours, Minutes, Seconds, Date, 24-hour hand (dual time display function), Power reserve indicator, Calendar-linked time difference adjustment function
  • Water Resistance: 100 metres / 10 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

All watches purchased on MaisonBirks.com can only be returned or exchanged by mail within 30 days of delivery, 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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