Duxot Henri Diver AutomaticvsFortis Marinemaster M-40
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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.

Henri Diver Automatic

Marinemaster M-40
Diameter
41mm
40mm
Lug-to-Lug
47mm
n/a
Thickness
15mm
13mm
lowest
Water Resistance
200m
300m
highest
Power Reserve
n/a
38h
MSRP
$310
lowest
$3,520
Movement
Seiko NH35
Sellita SW220-1
Case
6 specsCrystal & Dial
1 specsMovement
6 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
Owners widely praise the Duxot Henri Diver Automatic for its accuracy, good fit, and value. One owner wishes the lume lasted longer, while another found the bracelet trash and flimsy. A similar model was noted to gain 2-3 minutes per hour after two months. On balance, owners rate the Duxot Henri Diver Automatic highly for its value and accuracy, despite some concerns about bracelet quality and lume longevity.
The brass wave dial with applied Super Luminous indices delivers striking visual depth and reliable on-wrist legibility across all lighting conditions. The 41mm case with 47mm lug-to-lug proportions and Japanese automatic movement balance compact wearability with robust 20 ATM water resistance, though the 15mm thickness reads substantial for its diameter.
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.
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