Side by side

Citizen Promaster Diver EcozillavsFortis Marinemaster M-40

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

Promaster Diver Ecozilla
CitizenPromaster Diver Ecozilla
MSRP $469
Marinemaster M-40
FortisMarinemaster M-40
MSRP $3,520

At a glance

12 of 29 specs differ
Diameter
Promaster Diver Ecozilla48mm
Marinemaster M-4040mm
Power Reserve
Promaster Diver Ecozilla40h
Marinemaster M-4038h
Water Resistance
Promaster Diver Ecozilla300m
Marinemaster M-40300m
MSRP
Promaster Diver Ecozilla$469
Marinemaster M-40$3,520

Full specifications

Case

4 specs
Diameter
48mm
40mm
Thickness
12mm
13mm
Lug-to-Lug
46mm
Lug Width
29mm
21mm

Crystal & Dial

3 specs
Crystal
Mineral
Sapphire
AR Coating
Underside
Inner
Dial Color
Black
Orange

Movement

4 specs
Caliber
B873
Sellita SW220-1
Type
Solar
Automatic
Power Reserve
40h
38h
Jewels
25
26

Pricing

1 specs
MSRP
$469
$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 Diver Ecozilla

The Citizen Promaster Diver Ecozilla is widely praised for its reassuringly solid, overbuilt feel and excellent value, especially when on sale. Owners note that the second hand hits its markers well, with one owner reporting all nine of their Citizen watches exhibit proper alignment. The watch features robust 300m water resistance and vibrant lume. However, its substantial 48mm size and 18.6mm thickness create a massive wrist presence, and some owners question its wearability due to its chunky dimensions, with one noting the stainless steel version weighs a ton. On balance, owners and reviewers rate the Citizen Promaster Diver Ecozilla highly for its robust build and excellent value proposition.

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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