Side by side

Fortis Marinemaster M-40vsSugess Seestern S456 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 S456 GMT
SugessSeestern S456 GMT
MSRP $299

At a glance

11 of 29 specs differ
Diameter
Marinemaster M-4040mm
Seestern S456 GMT40mm
Power Reserve
Marinemaster M-4038h
Seestern S456 GMT40h
Water Resistance
Marinemaster M-40300m
Seestern S456 GMT200m
MSRP
Marinemaster M-40$3,520
Seestern S456 GMT$299

Full specifications

Case

4 specs
Category
Diver
GMT
Lug-to-Lug
48.8mm
Lug Width
21mm
20mm
Water Resistance
300m
200m

Crystal & Dial

2 specs
Dial Color
Orange
Blue
Lume
None
Tritium

Movement

4 specs
Caliber
Sellita SW220-1
NH34
Power Reserve
38h
40h
Jewels
26
25
Complications
None
GMT, Date

Pricing

1 specs
MSRP
$3,520
$299

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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 S456 GMT

Owners widely praise the Sugess Seestern S456 GMT for its excellent case finishing, deep blue sunburst dial, and crisp indices, with one owner rating the overall fit and finish 9.5 out of 10. The watch is noted for its legibility, strong lume that lasts about 4 hours, and accurate timekeeping around -4 seconds per day, with easy GMT hand adjustment. Some owners report issues with a loose or friction-based unidirectional bezel, while others find theirs tight and prefer a bidirectional GMT bezel. The sapphire crystal is described as clear and flat by some, but others find it very reflective with AR coating that could be improved. Sizing is generally considered good at 39mm with a 46mm lug-to-lug and 12mm thickness, though one owner expresses concern about its 49mm lug-to-lug and 41mm bezel diameter. Overall, owners rate the Sugess Seestern S456 GMT highly for its impressive finishing and dial at its price point.

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