Side by side

Citizen Promaster Dive E365vsMarathon GSAR (Government Search & Rescue) Diver's Automatic

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

Promaster Dive E365
CitizenPromaster Dive E365
MSRP $544
GSAR (Government Search & Rescue) Diver's Automatic
MarathonGSAR (Government Search & Rescue) Diver's Automatic
MSRP $2,100

At a glance

9 of 29 specs differ
Diameter
Promaster Dive E36546mm
GSAR (Government Search & Rescue) Diver's Automatic41mm
Power Reserve
Promaster Dive E36540h
GSAR (Government Search & Rescue) Diver's Automatic40h
Water Resistance
Promaster Dive E365300m
GSAR (Government Search & Rescue) Diver's Automatic300m
MSRP
Promaster Dive E365$544
GSAR (Government Search & Rescue) Diver's Automatic$2,100

Full specifications

Case

4 specs
Diameter
46mm
41mm
Thickness
12mm
14mm
Lug-to-Lug
46mm
48mm
Material
Stainless Steel
316L Stainless Steel

Crystal & Dial

2 specs
AR Coating
Underside
Inner
Dial Color
Red
Anthracite

Movement

2 specs
Caliber
E365
Sellita SW200-1
Type
Solar
Automatic

Pricing

1 specs
MSRP
$544
$2,100

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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.

Marathon GSAR (Government Search & Rescue) Diver's Automatic

The Marathon GSAR (Government Search & Rescue) Diver's Automatic is widely praised for its legibility, comfort, and exceptional tritium illumination, with reviewers highlighting its utilitarian, military-equipment feel and a 41mm case size considered ideal. Owners appreciate its grippy bezel and the 300 meters of water resistance provided by the screw-down crown, deeming it a solid value for a Swiss-made tool watch. Some owners report quality control issues, with one user needing to warranty two watches, and another notes the GSAR wears taller than other models, leading to occasional bumping. The reliable ETA 2824-A2 movement is a consistent feature. Overall, owners and reviewers rate the Marathon GSAR (Government Search & Rescue) Diver's Automatic highly for its bright tritium lume and robust, no-nonsense tool watch design.

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