Side by side

Fortis Marinemaster M-40vsSugess Seestern S446 GMT

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 S446 GMT
SugessSeestern S446 GMT
MSRP $269

At a glance

13 of 29 specs differ
Diameter
Marinemaster M-4040mm
Seestern S446 GMT40mm
Power Reserve
Marinemaster M-4038h
Seestern S446 GMT41h
Water Resistance
Marinemaster M-40300m
Seestern S446 GMT100m
MSRP
Marinemaster M-40$3,520
Seestern S446 GMT$269

Full specifications

Case

5 specs
Category
Diver
GMT
Thickness
13mm
10mm
Lug-to-Lug
47mm
Lug Width
21mm
19mm
Water Resistance
300m
100m

Crystal & Dial

2 specs
Dial Color
Orange
Black
Lume
None
Tritium

Movement

5 specs
Caliber
Sellita SW220-1
Seiko NH34
Beat Rate
28,800 vph
3 vph
Power Reserve
38h
41h
Jewels
26
25
Complications
None
GMT, Moonphase, Date

Pricing

1 specs
MSRP
$3,520
$269

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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 S446 GMT

Owners widely praise the Sugess Seestern S446 GMT for its outstanding finishing and materials at its price point, with specific mentions of the cream or ivory dial, polished hands, and clear crystal offering superb legibility. Accuracy is generally good, with one owner reporting +2/3 seconds per day from the Seiko NH34A movement. Some owners find the lume is not a strong point, and the bracelet clasp could benefit from more micro-adjustment, with screw pins noted as cheap. The GMT hand is described as flat by some, and opinions are split on the "Sugess" versus "Seestern" logo. Overall, owners rate the Sugess Seestern S446 GMT highly for its beautiful dial and excellent build quality for the price.

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