Side by side

Fortis Marinemaster M-40vsSeiko Essentials Quartz

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
Essentials Quartz
SeikoEssentials Quartz
MSRP $265

At a glance

13 of 29 specs differ
Diameter
Marinemaster M-4040mm
Essentials Quartz40.2mm
Power Reserve
Marinemaster M-4038h
Essentials Quartz40h
Water Resistance
Marinemaster M-40300m
Essentials Quartz100m
MSRP
Marinemaster M-40$3,520
Essentials Quartz$265

Full specifications

Case

6 specs
Category
Diver
Dress
Diameter
40mm
40.2mm
Thickness
13mm
8.3mm
Lug-to-Lug
47mm
Lug Width
21mm
20mm
Water Resistance
300m
100m

Crystal & Dial

2 specs
Dial Color
Orange
Black
Lume
None
LumiBrite on Hands

Movement

4 specs
Caliber
Sellita SW220-1
6N52
Type
Automatic
Quartz
Power Reserve
38h
40h
Jewels
26
25

Pricing

1 specs
MSRP
$3,520
$265

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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 Essentials Quartz

Seiko Essentials Quartz owners praise its high quality and value, highlighting its thin 8.4mm case, sapphire crystal, 100m water resistance, and quartz convenience, with the titanium variant weighing just 50g for exceptional comfort. The polished surfaces can develop fine swirls from daily wear, and the gold plating may wear off edges over time, requiring maintenance. The titanium bracelet's smaller center link creates wider gaps than the steel version, and some owners prefer to remove the 50m-rated watch for showering, especially if it lacks a screw-down crown. On balance, owners rate the Seiko Essentials Quartz highly for its comfortable, lightweight titanium build and convenient quartz accuracy at the price.

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