Side by side

Marathon Arctic OSAR 46mm AutomaticvsCitizen Promaster Dive E365

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

Arctic OSAR 46mm Automatic
MarathonArctic OSAR 46mm Automatic
MSRP $2,500
Promaster Dive E365
CitizenPromaster Dive E365
MSRP $544

At a glance

9 of 29 specs differ
Diameter
Arctic OSAR 46mm Automatic46mm
Promaster Dive E36546mm
Power Reserve
Arctic OSAR 46mm Automatic40h
Promaster Dive E36540h
Water Resistance
Arctic OSAR 46mm Automatic300m
Promaster Dive E365300m
MSRP
Arctic OSAR 46mm Automatic$2,500
Promaster Dive E365$544

Full specifications

Case

4 specs
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
$2,500
$544

Follow this matchup

Get a note when Marathon Arctic OSAR 46mm Automatic vs Citizen Promaster Dive E365 gets more votes, a community discussion, or a price drop. No account needed.

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 46mm Automatic

Owners widely praise the Marathon Arctic OSAR 46mm Automatic for its overbuilt toughness and industrial, instrument-like aesthetic, with some preferring the Arctic dial for legibility. One owner notes the automatic movement may be unnecessary for rough use compared to a quartz option. Reviewers mention the MaraGlo luminous paint and a Sellita SW200-1 automatic movement. Some owners question its rising price and luxury positioning, with one reporting poor lume and movement performance. Overall, owners value the Marathon Arctic OSAR 46mm Automatic for its robust build and utilitarian design.

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.

Keep exploring

More watches worth a look

Matched to the watches above on size, movement, style and price — microbrands first. Open any one to dig in.

Adjacent matchups

People also compared

Comparisons nearby in the catalog — alternatives to the watches above paired against the matchup.