Side by side

Citizen Promaster Diver EcozillavsMarathon TSAR (Tritium Search & Rescue) Diver's Quartz

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

Promaster Diver Ecozilla
CitizenPromaster Diver Ecozilla
MSRP $469
TSAR (Tritium Search & Rescue) Diver's Quartz
MarathonTSAR (Tritium Search & Rescue) Diver's Quartz
MSRP $1,550

At a glance

10 of 29 specs differ
Diameter
Promaster Diver Ecozilla48mm
TSAR (Tritium Search & Rescue) Diver's Quartz46mm
Power Reserve
Promaster Diver Ecozilla40h
TSAR (Tritium Search & Rescue) Diver's Quartz40h
Water Resistance
Promaster Diver Ecozilla300m
TSAR (Tritium Search & Rescue) Diver's Quartz300m
MSRP
Promaster Diver Ecozilla$469
TSAR (Tritium Search & Rescue) Diver's Quartz$1,550

Full specifications

Case

5 specs
Diameter
48mm
46mm
Thickness
12mm
14mm
Lug-to-Lug
46mm
48mm
Lug Width
29mm
20mm
Material
Stainless Steel
316L Stainless Steel

Crystal & Dial

2 specs
Crystal
Mineral
Sapphire
AR Coating
Underside
Inner

Movement

2 specs
Caliber
B873
Swiss High-Torque Quartz
Type
Solar
Quartz

Pricing

1 specs
MSRP
$469
$1,550

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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.

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.

Marathon TSAR (Tritium Search & Rescue) Diver's Quartz

Owners widely praise the Marathon TSAR (Tritium Search & Rescue) Diver's Quartz for its ISO 6425 certification and practical, everyday wearability, with one owner noting the movement sets and ticks fine with expected quartz accuracy. The bezel and crystal are also described as great. One owner reports the 41mm TSAR wears small and has a field watch aesthetic, while another notes the TSAR Medium, listed at 12mm thick, visually appears thicker. Overall, owners rate the Marathon TSAR (Tritium Search & Rescue) Diver's Quartz highly for its robust build and practical design.

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