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Grand Seiko Evolution 9 Atera River Spring Drive 40 mm Titanium image number 0 Grand Seiko Evolution 9 Atera River Spring Drive 40 mm Titanium image number 1
Grand Seiko Evolution 9 Atera River Spring Drive 40 mm Titanium image number 0 Grand Seiko Evolution 9 Atera River Spring Drive 40 mm Titanium image number 1

Nestled among the 3,000-meter peaks of Nagano Prefecture, the birthplace of Spring Drive, the Atera River flows through a deep ravine known for its striking, emerald-green waters. Inspired by this clarity and natural beauty, the dial evokes a summer stream so transparent that its depth and harmony can almost be felt.

At its core, the Spring Drive 5 Days Caliber 9RA2 delivers up to 120 hours of power when fully wound, paired with an impressive accuracy of ±10 seconds per month—an extraordinary achievement for a mainspring-driven movement.


  • Product Number: 450020359204
  • Model Number: SLGA025
  • Movement: Spring Drive
  • Dial Colour/Material: Green
  • Case Size: 40 mm
  • Case Material: Titanium
  • Bracelet: Titanium
  • Complication: Date
  • Warranty: 5 years
  • Case Thickness: 11.8 mm
  • Caseback: See-through, sapphire crystal
  • Watch Crystal: Dual-curved sapphire with anti-reflective coating on inner surface
  • Clasp: Three-fold clasp with push button release
  • Calibre: 9RA2
  • Power Reserve: 120 hours
  • Water Resistance: 100 metres / 10 ATM
  • Functions: Hour, minutes, second, date, power reserve indicator
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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.

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. If a prepaid shipping label was not received with your order, please contact Client Services Team at +1 (855) 873-7373 or +1 (833) 613-2600 or send an email to info@birks.com. For more information, click here.

Grand Seiko

Grand Seiko Evolution 9 Atera River Spring Drive 40 mm Titanium

Evolution 9 Atera River Spring Drive 40 mm Titanium
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This item is in an in-store exclusive.

Nestled among the 3,000-meter peaks of Nagano Prefecture, the birthplace of Spring Drive, the Atera River flows through a deep ravine known for its striking, emerald-green waters. Inspired by this clarity and natural beauty, the dial evokes a summer stream so transparent that its depth and harmony can almost be felt.

At its core, the Spring Drive 5 Days Caliber 9RA2 delivers up to 120 hours of power when fully wound, paired with an impressive accuracy of ±10 seconds per month—an extraordinary achievement for a mainspring-driven movement.


  • Product Number: 450020359204
  • Model Number: SLGA025
  • Movement: Spring Drive
  • Dial Colour/Material: Green
  • Case Size: 40 mm
  • Case Material: Titanium
  • Bracelet: Titanium
  • Complication: Date
  • Warranty: 5 years
  • Case Thickness: 11.8 mm
  • Caseback: See-through, sapphire crystal
  • Watch Crystal: Dual-curved sapphire with anti-reflective coating on inner surface
  • Clasp: Three-fold clasp with push button release
  • Calibre: 9RA2
  • Power Reserve: 120 hours
  • Water Resistance: 100 metres / 10 ATM
  • Functions: Hour, minutes, second, date, power reserve indicator
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.

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. If a prepaid shipping label was not received with your order, please contact Client Services Team at +1 (855) 873-7373 or +1 (833) 613-2600 or send an email to info@birks.com. For more information, click here.

Nestled among the 3,000-meter peaks of Nagano Prefecture, the birthplace of Spring Drive, the Atera River flows through a deep ravine known for its striking, emerald-green waters. Inspired by this clarity and natural beauty, the dial evokes a summer stream so transparent that its depth and harmony can almost be felt.

At its core, the Spring Drive 5 Days Caliber 9RA2 delivers up to 120 hours of power when fully wound, paired with an impressive accuracy of ±10 seconds per month—an extraordinary achievement for a mainspring-driven movement.


  • Product Number: 450020359204
  • Model Number: SLGA025
  • Movement: Spring Drive
  • Dial Colour/Material: Green
  • Case Size: 40 mm
  • Case Material: Titanium
  • Bracelet: Titanium
  • Complication: Date
  • Warranty: 5 years
  • Case Thickness: 11.8 mm
  • Caseback: See-through, sapphire crystal
  • Watch Crystal: Dual-curved sapphire with anti-reflective coating on inner surface
  • Clasp: Three-fold clasp with push button release
  • Calibre: 9RA2
  • Power Reserve: 120 hours
  • Water Resistance: 100 metres / 10 ATM
  • Functions: Hour, minutes, second, date, power reserve indicator
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.

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. If a prepaid shipping label was not received with your order, please contact Client Services Team at +1 (855) 873-7373 or +1 (833) 613-2600 or send an email to info@birks.com. For more information, click here.

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