Side by side

Fortis Marinemaster M-40vsStudio Underd0g Steffany Blue

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
Steffany Blue
Studio Underd0gSteffany Blue
MSRP $800

At a glance

11 of 29 specs differ
Diameter
Marinemaster M-4040mm
Steffany Blue39.5mm
Power Reserve
Marinemaster M-4038h
Steffany Blue40h
Water Resistance
Marinemaster M-40300m
Steffany Blue
MSRP
Marinemaster M-40$3,520
Steffany Blue$800

Full specifications

Case

5 specs
Category
Diver
Casual
Diameter
40mm
39.5mm
Thickness
13mm
Lug Width
21mm
Water Resistance
300m

Crystal & Dial

1 specs
Dial Color
Orange
Blue

Movement

4 specs
Caliber
Sellita SW220-1
Type
Automatic
Manual
Power Reserve
38h
40h
Jewels
26
25

Pricing

1 specs
MSRP
$3,520
$800

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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.

Studio Underd0g Steffany Blue

Owners widely praise the Studio Underd0g Steffany Blue for its beautiful multilayer dial with a floating effect and vivid Super-LumiNova, with one owner finding it smaller and more beautiful than expected. The 37mm case wears nicely, though some find it slightly small for larger wrists. One owner notes the power reserve can fall short of the advertised 48 hours, sometimes lasting only about a day. Overall, owners rate the Studio Underd0g Steffany Blue highly for its striking dial and luminous display.

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