Side by side

Citizen Promaster Dive E365vsFortis Marinemaster M-40

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

Promaster Dive E365
CitizenPromaster Dive E365
MSRP $544
Marinemaster M-40
FortisMarinemaster M-40
MSRP $3,520

At a glance

11 of 29 specs differ
Diameter
Promaster Dive E36546mm
Marinemaster M-4040mm
Power Reserve
Promaster Dive E36540h
Marinemaster M-4038h
Water Resistance
Promaster Dive E365300m
Marinemaster M-40300m
MSRP
Promaster Dive E365$544
Marinemaster M-40$3,520

Full specifications

Case

4 specs
Diameter
46mm
40mm
Thickness
12mm
13mm
Lug-to-Lug
46mm
Lug Width
20mm
21mm

Crystal & Dial

2 specs
AR Coating
Underside
Inner
Dial Color
Red
Orange

Movement

4 specs
Caliber
E365
Sellita SW220-1
Type
Solar
Automatic
Power Reserve
40h
38h
Jewels
25
26

Pricing

1 specs
MSRP
$544
$3,520

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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.

Citizen Promaster Dive E365

The Citizen Promaster Dive E365 is lauded for its wearable 46mm lugless case, a striking red gradient dial, and the Cal.E365 Eco-Drive movement with a 365-day power reserve. Owners report comfortable wearability despite its dimensions and weight, with accuracy noted as within one second of an atomic clock. Some find the red dial to appear more brownish than red, and opinions are split on the lume, with one owner finding it underwhelming compared to other Citizen divers while another states their 300m Citizen divers function as "nightlights." The watch's 16.3mm thickness contributes to an industrial feel, and the accordion-style rubber strap may be visually divisive. On balance, owners and reviewers rate the Citizen Promaster Dive E365 highly for its impressive power reserve and comfortable wearability in a robust dive watch package.

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.

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