Side by side

Fortis Marinemaster M-40vsGrand Seiko SLGB001

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
SLGB001
Grand SeikoSLGB001
MSRP $39,000

At a glance

14 of 29 specs differ
Diameter
Marinemaster M-4040mm
SLGB00137mm
Power Reserve
Marinemaster M-4038h
SLGB00172h
Water Resistance
Marinemaster M-40300m
SLGB001100m
MSRP
Marinemaster M-40$3,520
SLGB001$39,000

Full specifications

Case

7 specs
Category
Diver
Dress
Diameter
40mm
37mm
Thickness
13mm
11.4mm
Lug-to-Lug
44.3mm
Lug Width
21mm
20mm
Material
Stainless Steel
Platinum
Water Resistance
300m
100m

Crystal & Dial

2 specs
AR Coating
Inner
Yes
Dial Color
Orange
Black

Movement

4 specs
Caliber
Sellita SW220-1
9RB2
Type
Automatic
Spring Drive
Power Reserve
38h
72h
Jewels
26
25

Pricing

1 specs
MSRP
$3,520
$39,000

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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 SLGB001

The Grand Seiko SLGB001 is a limited edition platinum watch in the Evolution 9 collection, featuring a 37mm case and the new Calibre 9RB2 Spring Drive U.F.A. movement, rated to ±20 seconds per year. It has an "Ice Forest" dial with a deep blue hue and a silver seconds hand, but notably lacks lume. A criticism is the absence of a micro-adjustment clasp on its leather strap. Overall, reviewers highlight the watch's advanced movement and distinctive dial as key features.

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