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The Longines HYDROCONQUEST GMT is widely praised for its excellent finishing, with some comparing it favorably to higher-end dive watches, and its attractive blue sunburst dial. Owners note its practical true GMT complication and robust 41mm brushed case with ceramic bezel, powered by a movement offering a 72-hour power reserve. Some in the community find the round markers at 6 and 9 disrupt dial symmetry, though others appreciate this design element. A common criticism is the difficulty in reading the tiny GMT text beneath the hour markers, and the absence of a quick date adjust feature. One owner reported a sharp feeling on the bracelet's clasp, and another flagged mismatched date wheel colors on certain dial variants. Overall, owners and reviewers consider the Longines HYDROCONQUEST GMT a strong value proposition for a traveler's dive watch, citing its build quality and GMT functionality as key strengths.
5 Variants
Retail MSRP
$3,350
Low
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Avg
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High
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Static data
Case
43mm
Power Reserve
72h
Movement
Automatic
Water Resistance
300m
01
Case Dimensions
Diameter43mm
Thickness12.9mm
Lug-to-Lug52mm
Lug Width22mm
02
Case Build
MaterialStainless Steel
Water Resistance300m
03
Crystal & Dial
CrystalSapphire
Dial ColorGreen
04
Movement
Caliber
TypeAutomatic
Beat Rate—
Power Reserve72 hours
Jewels—
HackingNo
Hand-WindingNo
ComplicationsTime only
05
Design Language
Dial styleMatte
Bezel24-hour (GMT)
Bracelet / strapLug-attached bracelet
HandsBaton
AI-detected from product image · 5/22/2026
In a nutshell
The Longines HYDROCONQUEST GMT (ref. L3.890.4.06.6) is an automatic diver watch, with a 43mm stainless steel case, 12.9mm thick, powered by the L844.5 movement and a 72-hour power reserve. Water resistance is rated to 300m, under a sapphire crystal. Manufacturer MSRP is $3,350. The dial color is green.