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Hydroconquest GMT now comes with 43 mm-diameter black dial, with the exclusive Longines GMT calibre L844.5. It boasts extreme precision and a power reserve of up to 72 hours. A black sunray dial, unidirectional rotating bezel in black ceramic, water resistance to 30 bar (300 metres) and screw-in crown and screw-down case back are the signature features of this watch inspired by the world of water sports. The model comes with a black rubber strap.


  • Product Number: 450018717139
  • Model Number: L3.890.4.56.9
  • Collection: Diving
  • Subcollection: HydroConquest
  • Movement: Automatic
  • Calibre: L844
  • Case Material: Stainless Steel
  • Case Thickness: 12.9 mm
  • Case Size: 43 mm
  • Watch Crystal: Scratch-resistant sapphire crystal with several layers of anti-reflective coating on both sides
  • Dial Color: Black
  • Caseback: Plain, stainless steel
  • Bracelet: Rubber
  • Clasp: Buckle with double security folding clasp with micro adjustment system
  • Water Resistance: 300 metres / 30 ATM
  • Functions: Hours, minutes, seconds and date, 24-hour hand with time zone mechanism
  • Power Reserve: 72 hours
  • Complication: GMT
  • Bezel: Unidirectional rotating, ceramic
  • Warranty: 5 years
  • Case Material: Stainless Steel
  • Case Size: 43 mm
  • Case Thickness: 12.9 mm
  • Caseback: Plain, stainless steel
  • Dial Color: Black
  • Bezel: Unidirectional rotating, ceramic
  • Watch Crystal: Scratch-resistant sapphire crystal with several layers of anti-reflective coating on both sides
  • Movement: Automatic
  • Complication: GMT
  • Calibre: L844
  • Power Reserve: 72 hours
  • Functions: Hours, minutes, seconds and date, 24-hour hand with time zone mechanism
  • Clasp: Buckle with double security folding clasp with micro adjustment system
  • Bracelet: Rubber
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SHIPPING

For Canadian orders*

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 5 to 7 days business days.

RETURNS

For all regular-priced merchandise purchased online at MaisonBirks.com or in a Maison Birks store, returns and exchanges will be accepted 30 days after purchase, provided merchandise has not been worn, altered, engraved, or personalized and must be accompanied by proof of purchase, original packaging, and warranty materials. *Learn more about our shipping and return policy.

Longines

Longines HydroConquest Automatic GMT 43 mm Stainless Steel

HydroConquest Automatic GMT 43 mm Stainless Steel
Estimated Price:
$ 3,600
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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.

Hydroconquest GMT now comes with 43 mm-diameter black dial, with the exclusive Longines GMT calibre L844.5. It boasts extreme precision and a power reserve of up to 72 hours. A black sunray dial, unidirectional rotating bezel in black ceramic, water resistance to 30 bar (300 metres) and screw-in crown and screw-down case back are the signature features of this watch inspired by the world of water sports. The model comes with a black rubber strap.


  • Product Number: 450018717139
  • Model Number: L3.890.4.56.9
  • Collection: Diving
  • Subcollection: HydroConquest
  • Movement: Automatic
  • Calibre: L844
  • Case Material: Stainless Steel
  • Case Thickness: 12.9 mm
  • Case Size: 43 mm
  • Watch Crystal: Scratch-resistant sapphire crystal with several layers of anti-reflective coating on both sides
  • Dial Color: Black
  • Caseback: Plain, stainless steel
  • Bracelet: Rubber
  • Clasp: Buckle with double security folding clasp with micro adjustment system
  • Water Resistance: 300 metres / 30 ATM
  • Functions: Hours, minutes, seconds and date, 24-hour hand with time zone mechanism
  • Power Reserve: 72 hours
  • Complication: GMT
  • Bezel: Unidirectional rotating, ceramic
  • Warranty: 5 years
  • Case Material: Stainless Steel
  • Case Size: 43 mm
  • Case Thickness: 12.9 mm
  • Caseback: Plain, stainless steel
  • Dial Color: Black
  • Bezel: Unidirectional rotating, ceramic
  • Watch Crystal: Scratch-resistant sapphire crystal with several layers of anti-reflective coating on both sides
  • Movement: Automatic
  • Complication: GMT
  • Calibre: L844
  • Power Reserve: 72 hours
  • Functions: Hours, minutes, seconds and date, 24-hour hand with time zone mechanism
  • Clasp: Buckle with double security folding clasp with micro adjustment system
  • Bracelet: Rubber
View More Details
View Fewer Details

SHIPPING

For Canadian orders*

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 5 to 7 days business days.

RETURNS

For all regular-priced merchandise purchased online at MaisonBirks.com or in a Maison Birks store, returns and exchanges will be accepted 30 days after purchase, provided merchandise has not been worn, altered, engraved, or personalized and must be accompanied by proof of purchase, original packaging, and warranty materials. *Learn more about our shipping and return policy.

Hydroconquest GMT now comes with 43 mm-diameter black dial, with the exclusive Longines GMT calibre L844.5. It boasts extreme precision and a power reserve of up to 72 hours. A black sunray dial, unidirectional rotating bezel in black ceramic, water resistance to 30 bar (300 metres) and screw-in crown and screw-down case back are the signature features of this watch inspired by the world of water sports. The model comes with a black rubber strap.


  • Product Number: 450018717139
  • Model Number: L3.890.4.56.9
  • Collection: Diving
  • Subcollection: HydroConquest
  • Movement: Automatic
  • Calibre: L844
  • Case Material: Stainless Steel
  • Case Thickness: 12.9 mm
  • Case Size: 43 mm
  • Watch Crystal: Scratch-resistant sapphire crystal with several layers of anti-reflective coating on both sides
  • Dial Color: Black
  • Caseback: Plain, stainless steel
  • Bracelet: Rubber
  • Clasp: Buckle with double security folding clasp with micro adjustment system
  • Water Resistance: 300 metres / 30 ATM
  • Functions: Hours, minutes, seconds and date, 24-hour hand with time zone mechanism
  • Power Reserve: 72 hours
  • Complication: GMT
  • Bezel: Unidirectional rotating, ceramic
  • Warranty: 5 years
  • Case Material: Stainless Steel
  • Case Size: 43 mm
  • Case Thickness: 12.9 mm
  • Caseback: Plain, stainless steel
  • Dial Color: Black
  • Bezel: Unidirectional rotating, ceramic
  • Watch Crystal: Scratch-resistant sapphire crystal with several layers of anti-reflective coating on both sides
  • Movement: Automatic
  • Complication: GMT
  • Calibre: L844
  • Power Reserve: 72 hours
  • Functions: Hours, minutes, seconds and date, 24-hour hand with time zone mechanism
  • Clasp: Buckle with double security folding clasp with micro adjustment system
  • Bracelet: Rubber
View More Details
View Fewer Details

SHIPPING

For Canadian orders*

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 5 to 7 days business days.

RETURNS

For all regular-priced merchandise purchased online at MaisonBirks.com or in a Maison Birks store, returns and exchanges will be accepted 30 days after purchase, provided merchandise has not been worn, altered, engraved, or personalized and must be accompanied by proof of purchase, original packaging, and warranty materials. *Learn more about our shipping and return policy.

Contact an Expert