Side by side

Fortis Marinemaster M-40vsGrand Seiko SBGW291

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
SBGW291
Grand SeikoSBGW291
MSRP $5,300

At a glance

13 of 29 specs differ
Diameter
Marinemaster M-4040mm
SBGW29136.5mm
Power Reserve
Marinemaster M-4038h
SBGW29172h
Water Resistance
Marinemaster M-40300m
SBGW291100m
MSRP
Marinemaster M-40$3,520
SBGW291$5,300

Full specifications

Case

6 specs
Category
Diver
Dress
Diameter
40mm
36.5mm
Thickness
13mm
11.6mm
Lug-to-Lug
42.7mm
Lug Width
21mm
18mm
Water Resistance
300m
100m

Crystal & Dial

2 specs
AR Coating
Inner
Yes
Dial Color
Orange
Black

Movement

4 specs
Caliber
Sellita SW220-1
9S64
Type
Automatic
Manual
Power Reserve
38h
72h
Jewels
26
25

Pricing

1 specs
MSRP
$3,520
$5,300

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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.

Grand Seiko SBGW291

The Grand Seiko SBGW291 is praised for its charming 36.5mm size and a silver sunburst dial with sharply chamfered indices and dauphine hands. Reviewers note the hallmark Zaratsu polished surfaces and the hand-wound 9S64 movement, which provides accuracy between -3 to +5 seconds per day and a three-day power reserve. The case wears wonderfully on smaller wrists. However, its €5,200 price is considered high by one reviewer, especially without a steel bracelet, suggesting vintage options might be more appealing. Overall, reviewers consider the Grand Seiko SBGW291 a valid option for a simpler, smaller Grand Seiko experience, with its wearability and finishing being key strengths.

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