Side by side

Fortis Marinemaster M-40vsSeiko Prospex Rotocall

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
Prospex Rotocall
SeikoProspex Rotocall
MSRP $550

At a glance

13 of 29 specs differ
Diameter
Marinemaster M-4040mm
Prospex Rotocall37mm
Power Reserve
Marinemaster M-4038h
Prospex Rotocall40h
Water Resistance
Marinemaster M-40300m
Prospex Rotocall100m
MSRP
Marinemaster M-40$3,520
Prospex Rotocall$550

Full specifications

Case

6 specs
Category
Diver
Sport
Diameter
40mm
37mm
Thickness
13mm
10.6mm
Lug-to-Lug
43.5mm
Lug Width
21mm
20mm
Water Resistance
300m
100m

Crystal & Dial

2 specs
Crystal
Sapphire
Hardlex
Dial Color
Orange
Black

Movement

4 specs
Caliber
Sellita SW220-1
A824
Type
Automatic
Quartz
Power Reserve
38h
40h
Jewels
26
25

Pricing

1 specs
MSRP
$3,520
$550

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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.

Seiko Prospex Rotocall

Owners widely praise the Seiko Prospex Rotocall for its charismatic retro design and comfortable 37mm size, with many appreciating its space-faring heritage. However, multiple sources criticize its price point, suggesting it is too high for an all-digital quartz watch with features like a stamped clasp, mineral crystal, and standard quartz movement. Some owners also note drawbacks such as a flimsy battery mount and split pin bracelet construction. On balance, owners and reviewers find the Seiko Prospex Rotocall visually appealing and a faithful re-release, but its value proposition is frequently questioned due to its price.

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