Side by side

Fortis Marinemaster M-40vsSugess Seestern Heritage S436-2 BB 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 Heritage S436-2 BB GMT
SugessSeestern Heritage S436-2 BB GMT
MSRP $299

At a glance

13 of 29 specs differ
Diameter
Marinemaster M-4040mm
Seestern Heritage S436-2 BB GMT40mm
Power Reserve
Marinemaster M-4038h
Seestern Heritage S436-2 BB GMT35h
Water Resistance
Marinemaster M-40300m
Seestern Heritage S436-2 BB GMT10m
MSRP
Marinemaster M-40$3,520
Seestern Heritage S436-2 BB GMT$299

Full specifications

Case

5 specs
Category
Diver
GMT
Thickness
13mm
12.2mm
Lug-to-Lug
48mm
Lug Width
21mm
20mm
Water Resistance
300m
10m

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
35h
Jewels
26
25
Complications
None
GMT, Moonphase, 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 Heritage S436-2 BB GMT

Owners widely praise the Sugess Seestern Heritage S436-2 BB GMT for its 39mm sizing, 12mm thinness, and light yet solid feel, with many appreciating its legibility due to the matte dial, clear crystal, and strong lume, though one owner flags the lume as a weak point. The case finishing is considered excellent, and the blue dial and satin finish are favorably compared to alternatives. Some owners report issues with a loose bezel, with others finding it improved after tuning, and one owner notes the seconds hand is too short. The bracelet clasp lacks sufficient micro-adjustment and screw pins are difficult to remove. On balance, owners rate the Sugess Seestern Heritage S436-2 BB GMT highly for its comfortable wearability and attractive finishing at the price.

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