Side by side

Fortis Marinemaster M-40vsGrand Seiko SBGY007

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
SBGY007
Grand SeikoSBGY007
MSRP $8,900

At a glance

13 of 29 specs differ
Diameter
Marinemaster M-4040mm
SBGY00738.5mm
Power Reserve
Marinemaster M-4038h
SBGY00772h
Water Resistance
Marinemaster M-40300m
SBGY00730m
MSRP
Marinemaster M-40$3,520
SBGY007$8,900

Full specifications

Case

6 specs
Category
Diver
Dress
Diameter
40mm
38.5mm
Thickness
13mm
10.2mm
Lug-to-Lug
43.7mm
Lug Width
21mm
19mm
Water Resistance
300m
30m

Crystal & Dial

2 specs
AR Coating
Inner
Yes
Dial Color
Orange
Black

Movement

4 specs
Caliber
Sellita SW220-1
9R31
Type
Automatic
Spring Drive
Power Reserve
38h
72h
Jewels
26
25

Pricing

1 specs
MSRP
$3,520
$8,900

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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 SBGY007

Grand Seiko SBGY007 owners and reviewers widely praise its stunning, textured blue dial, inspired by frozen Lake Suwa, and its clean, time-only aesthetic. The watch is lauded for its impeccable finishing, including high polish and Zaratsu polishing, and its classic, thin 38.5mm stainless steel dress case. The hand-wound Spring Drive Caliber 9R31 movement is noted for its accuracy, rated to ±1 second per day, and a 72-hour power reserve, with its power reserve indicator discreetly placed on the case back. While some reviewers suggest room for improvement in Grand Seiko's pricing structure, the $8,300 USD price is seen by others as a relatively affordable entry into the brand's high-end offerings. On balance, the consensus is that the Grand Seiko SBGY007 is highly regarded for its exceptional dial artistry and refined finishing at its price point.

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