Side by side

Marathon Arctic OSAR 41mm AutomaticvsCitizen Promaster Dive E365

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

Arctic OSAR 41mm Automatic
MarathonArctic OSAR 41mm Automatic
MSRP $1,800
Promaster Dive E365
CitizenPromaster Dive E365
MSRP $544

At a glance

10 of 29 specs differ
Diameter
Arctic OSAR 41mm Automatic41mm
Promaster Dive E36546mm
Power Reserve
Arctic OSAR 41mm Automatic40h
Promaster Dive E36540h
Water Resistance
Arctic OSAR 41mm Automatic300m
Promaster Dive E365300m
MSRP
Arctic OSAR 41mm Automatic$1,800
Promaster Dive E365$544

Full specifications

Case

5 specs
Diameter
41mm
46mm
Thickness
13mm
12mm
Lug-to-Lug
43.5mm
46mm
Lug Width
18mm
20mm
Material
316L Stainless Steel
Stainless Steel

Crystal & Dial

2 specs
AR Coating
Inner
Underside
Dial Color
White
Red

Movement

2 specs
Caliber
Sellita SW220-1
E365
Type
Automatic
Solar

Pricing

1 specs
MSRP
$1,800
$544

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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.

Marathon Arctic OSAR 41mm Automatic

The Marathon Arctic OSAR 41mm Automatic is noted for its comfortable wearability on wrists under 7 inches, with one owner finding the 41mm size perfect. Accuracy observations vary, with one owner reporting a consistent +1 second per day and another noting -20 seconds per day. The watch features a Sellita automatic movement and has dimensions of 14mm thickness and a 48mm lug-to-lug. Overall, owners appreciate the Marathon Arctic OSAR 41mm Automatic for its comfortable fit and Marathon's overall appeal.

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.

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