Side by side

Fortis Marinemaster M-40vsGrand Seiko SBGM245

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
SBGM245
Grand SeikoSBGM245
MSRP $6,100

At a glance

12 of 29 specs differ
Diameter
Marinemaster M-4040mm
SBGM24540.5mm
Power Reserve
Marinemaster M-4038h
SBGM24572h
Water Resistance
Marinemaster M-40300m
SBGM245200m
MSRP
Marinemaster M-40$3,520
SBGM245$6,100

Full specifications

Case

6 specs
Category
Diver
GMT
Diameter
40mm
40.5mm
Thickness
13mm
14.4mm
Lug-to-Lug
48.6mm
Lug Width
21mm
20mm
Water Resistance
300m
200m

Crystal & Dial

2 specs
AR Coating
Inner
Yes
Dial Color
Orange
Black

Movement

3 specs
Caliber
Sellita SW220-1
9S66
Power Reserve
38h
72h
Jewels
26
25

Pricing

1 specs
MSRP
$3,520
$6,100

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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 SBGM245

Owners widely appreciate the Grand Seiko SBGM245 for its blend of sport and luxury, with one enthusiast highlighting its superior workmanship over quartz movements. However, opinions on its size vary, as one owner found the SBGM245 too large, preferring the comfort of a different variant. Overall, owners value the Grand Seiko SBGM245 for its refined craftsmanship, though its wearability is a point of personal preference.

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