Description
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.
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Shape: Round
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Material: Stainless steel and ceramic bezel
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Glass: Scratch-resistant sapphire crystal, with several layers of anti-reflective coating on both sides
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Case Back: Screw-down case back
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Dimension:Ø 43.00 mm
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Lug distance: 22 mm
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Lug-to-lug: 52.00 mm
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Thickness: 12.90 mm
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Water Resistance: Water-resistant to 30 bar
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Case Specificities: Screw-in crown, Unidirectional rotating bezel
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Weight: 134.9 g
Features
Care Guide
How to Care for Your Watch
Read the manual: Each watch has specific care instructions — follow them to avoid damage.
Keep it clean: Wipe with a soft cloth; use a soft toothbrush with water only. Avoid chemicals.
Store properly: Keep your watch in a cool, dry place. Use a watch box or roll. Avoid heat and sunlight.
Service regularly: Follow brand recommendations for maintenance to keep accuracy and performance.
Wind it: Wear or wind mechanical/automatic watches regularly; use a watch winder if needed.
Be gentle: Avoid shocks, drops, and rough activities — remove your watch when active.
Professional cleaning: A polish can restore shine and remove scratches.
Know water resistance:
• 30m: Splashes only
• 50m: Showering/light swimming
• 100m: Swimming/snorkeling
• 200m: Recreational scuba
• 500m+: Professional diving
Don’t press buttons underwater unless the watch is built for it.
Shipping & Returns
Shipping & Returns
Express Shipping: Orders placed by 2 PM ship within 48 hours (subject to availability).
Standard Shipping: Free on orders over $75. All orders require 48 hours processing and deliver in 2–7 days.
Local Pickup: Available Tuesday–Friday, 10 AM–2 PM. You’ll receive an email when your order is ready. Please call or email to arrange pickup.
Please note:
– All packages require a signature.
– We do not ship to P.O. boxes.
Returns
If you’re not fully satisfied, returns are accepted within 14 days of delivery in original condition. All returns require approval and a Return Authorization number. A restocking fee may apply.
For any questions or updates, email info@gembijou.com.
We are constantly introducing new products to our catalogue in order to provide you with the most options for your new timepiece.