Side by side

Fortis Marinemaster M-40vsSugess Seestern S434 Pro Diver

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
Seestern S434 Pro Diver
SugessSeestern S434 Pro Diver
MSRP $249

At a glance

14 of 29 specs differ
Diameter
Marinemaster M-4040mm
Seestern S434 Pro Diver40mm
Power Reserve
Marinemaster M-4038h
Seestern S434 Pro Diver40h
Water Resistance
Marinemaster M-40300m
Seestern S434 Pro Diver200m
MSRP
Marinemaster M-40$3,520
Seestern S434 Pro Diver$249

Full specifications

Case

6 specs
Thickness
13mm
12mm
Lug-to-Lug
46mm
Lug Width
21mm
20mm
Material
Stainless Steel
Stainless Steel/Rose Gold
Water Resistance
300m
200m
Caseback
Solid
Engraved

Crystal & Dial

2 specs
Dial Color
Orange
2 Salmon
Lume
None
Super-LumiNova BGW9

Movement

5 specs
Caliber
Sellita SW220-1
NH35
Beat Rate
28,800 vph
3 vph
Power Reserve
38h
40h
Jewels
26
25
Complications
None
GMT, Chronograph, Moonphase, Date

Pricing

1 specs
MSRP
$3,520
$249

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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.

Sugess Seestern S434 Pro Diver

Owners widely praise the Sugess Seestern S434 Pro Diver for its impressive finishing and craftsmanship at its price point, highlighting the applied indices that play with light, excellent BGW9 lume, and attractive color options. Specific positive notes include the domed sapphire crystal, short lug-to-lug, and on-the-fly clasp adjustment. However, some owners report quality control issues such as misaligned bezels or indices, while others with V2 models experience no such problems. Caveats include slight bezel back play, light AR coating on the crystal, and a clasp that could be smoother, with one owner desiring a color-matched date wheel. On balance, owners rate the Sugess Seestern S434 Pro Diver highly for its exceptional value and build quality, particularly the dial finishing and lume.

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