Fortis Marinemaster M-40vsIXDAO Titanium 39mm Automatic Dive Watch
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Measurements
Catalog photos are all shot at the same flattering size. These aren't: every case below shares one millimeter scale.
Marinemaster M-40
Titanium 39mm Automatic Dive Watch
Diameter
40mm
39mm
Lug-to-Lug
n/a
47mm
Thickness
13mm
11.5mm
lowest
Water Resistance
300m
highest
200m
Power Reserve
38h
n/a
MSRP
$3,520
$269
lowest
Movement
Sellita SW220-1
Sellita SW200-1
Case
5 specsCrystal & Dial
1 specsMovement
4 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
Owners widely praise the Fortis Marinemaster M-40 for its gorgeous appearance and strong wrist presence, noting its impressive lume. The watch comes with a bracelet and three rubber straps, including a deployant buckle. On balance, owners rate the Fortis Marinemaster M-40 highly for its aesthetic appeal and comprehensive strap package.
The watch's Swiss Made construction and robust design are consistently praised. Reviewers noted the bracelet as a potential point of contention.
Owners widely praise the IXDAO Titanium 39mm Automatic Dive Watch for its surprisingly light titanium case and a fully lumed bezel insert, with one owner noting the blue lume is "CRAZY bright." However, multiple owners and reviewers flag build quality issues including sharp edges, rough bezel and crown action, and audible rotor spin. The 21mm lug width is a point of contention, with some finding it universally disliked while others appreciate the concept, and the dial text, particularly the "Timeless" slogan, is also a divisive element. On balance, owners and reviewers rate the IXDAO Titanium 39mm Automatic Dive Watch positively due to its lightweight titanium build and bright lume, despite noted build quality concerns.
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