Side by side

Fortis Marinemaster M-40vsLongines HYDROCONQUEST GMT

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

Marinemaster M-40
FortisMarinemaster M-40
MSRP $3,520
HYDROCONQUEST GMT
LonginesHYDROCONQUEST GMT
MSRP $3,350

At a glance

8 of 29 specs differ
Diameter
Marinemaster M-4040mm
HYDROCONQUEST GMT41mm
Power Reserve
Marinemaster M-4038h
HYDROCONQUEST GMT40h
Water Resistance
Marinemaster M-40300m
HYDROCONQUEST GMT300m
MSRP
Marinemaster M-40$3,520
HYDROCONQUEST GMT$3,350

Full specifications

Case

3 specs
Diameter
40mm
41mm
Thickness
13mm
12.9mm
Lug-to-Lug
49.4mm

Crystal & Dial

1 specs
Dial Color
Orange
Green

Movement

3 specs
Caliber
Sellita SW220-1
L844.5
Power Reserve
38h
40h
Jewels
26
25

Pricing

1 specs
MSRP
$3,520
$3,350

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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.

Fortis Marinemaster M-40

Owners praise the Fortis Amber Orange for its gorgeous appearance and strong wrist presence, noting its crazy lume and 70-hour power reserve. The Doxa SUB 300T, described as having a superb, eccentric design with a highly legible dial and functional no-decompression bezel, uses an ETA 2824-2 movement. However, the SUB 300T's 42.5mm case wears large and its 14mm thickness is not ideal for dress shirts, though it boasts 1,200m water resistance. On balance, owners appreciate the Fortis Amber Orange for its striking aesthetics and impressive lume.

Longines HYDROCONQUEST GMT

Owners widely praise the Longines HYDROCONQUEST GMT for its excellent finishing, smooth winding action, and overall value, with some finding its build quality and colorways superior to higher-priced competitors. Reviewers and owners alike note its robustness as a traveler's dive watch with a true GMT movement. Some owners find the round markers at 6 and 9 disrupt dial symmetry, and the GMT hour markers are described as tiny and difficult to read. The date wheel can be mismatched on certain dial colors, and the bracelet clasp is noted as sharp by one reviewer. While some owners wish for a smaller case size, others find the 41mm comfortable. The bezel action is flagged as having bounce-back by one owner, though the brushed finish effectively hides wear. Overall, owners and reviewers rate the Longines HYDROCONQUEST GMT highly for its robust build and excellent value proposition.

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