Fortis Marinemaster M-40vsTuseno Blackwater
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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
Blackwater
Diameter
40mm
40.5mm
Lug-to-Lug
n/a
50mm
Thickness
13mm
n/a
Water Resistance
300m
highest
200m
Power Reserve
38h
n/a
MSRP
$3,520
$999
lowest
Movement
Sellita SW220-1
Sellita SW200-1
Case
5 specsCrystal & Dial
2 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.
The Tuseno Blackwater is praised by owners and reviewers for its attractive, non-ordinary diver styling and versatile design. Enthusiastic owners state it "slaps hard," and reviewers highlight its value proposition at its price point, durability, and compelling wrist presence. The integrated bracelet is a standout feature, offering fluidity. The Tuseno Blackwater features a Sellita SW200-1 automatic movement, 200m water resistance, and a 40.5mm case. Some reviewers note a 38-hour power reserve as a bit lacking, while others find the bezel action solid but potentially stiff. On balance, owners and reviewers rate the Tuseno Blackwater highly for its unique styling and value at the price.
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