Side by side

Spinnaker Dumas GMTvsLongines HYDROCONQUEST

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

Dumas GMT
SpinnakerDumas GMT
MSRP $399
HYDROCONQUEST
LonginesHYDROCONQUEST
MSRP $2,350

At a glance

9 of 29 specs differ
Diameter
Dumas GMT44mm
HYDROCONQUEST39mm
Power Reserve
Dumas GMT40h
HYDROCONQUEST40h
Water Resistance
Dumas GMT300m
HYDROCONQUEST300m
MSRP
Dumas GMT$399
HYDROCONQUEST$2,350

Full specifications

Case

6 specs
Category
GMT
Diver
Diameter
44mm
39mm
Thickness
15mm
12.2mm
Lug-to-Lug
48mm
48.1mm
Lug Width
22mm
19mm
Material
316L Stainless Steel
Stainless Steel

Crystal & Dial

1 specs
Dial Color
Blue
Grey

Movement

1 specs
Caliber
Seiko NH34A
L888.5

Pricing

1 specs
MSRP
$399
$2,350

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What people say

Owners + reviewers, side by side

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

Spinnaker Dumas GMT

Owners praise the Spinnaker Dumas GMT's satisfying lume, including on the crown, and good finishing, with one owner finding it wears well on a 17cm wrist. The watch features a Seiko NH34A GMT movement and a blue gradient dial. Reviewers note its 44mm diameter and 209g weight on the bracelet make it unsuitable for smaller wrists.

Longines HYDROCONQUEST

Owners widely praise the Longines HydroConquest's dial and finishing, with one owner finding it superior to a Rolex Submariner. The movement is noted as well-regulated, losing about 2 seconds per day. The watch is considered a versatile everyday or business-casual option, offering good value. However, owners criticize the bracelet for lacking tool-less micro-adjustment and describe winding the crown as a nuisance. Some in the line report tiny GMT markers that are difficult to read and the absence of a quick date adjust feature. Overall, owners rate the Longines HydroConquest highly for its finishing and value.

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