Side by side

Marathon Arctic OSAR 46mm AutomaticvsSeiko Prospex LX line

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
Prospex LX line
SeikoProspex LX line
MSRP $6,500

At a glance

13 of 29 specs differ
Diameter
Arctic OSAR 46mm Automatic46mm
Prospex LX line44.8mm
Power Reserve
Arctic OSAR 46mm Automatic40h
Prospex LX line72h
Water Resistance
Arctic OSAR 46mm Automatic300m
Prospex LX line300m
MSRP
Arctic OSAR 46mm Automatic$2,500
Prospex LX line$6,500

Full specifications

Case

5 specs
Diameter
46mm
44.8mm
Thickness
13mm
15.7mm
Lug-to-Lug
43.5mm
50.9mm
Lug Width
18mm
22mm
Material
316L Stainless Steel
Titanium

Crystal & Dial

3 specs
AR Coating
Inner
Anti-reflective coating on inner surface
Dial Color
White
Black
Lume
None
LumiBrite on hands and index(es)

Movement

4 specs
Caliber
Sellita SW220-1
5R65
Type
Automatic
Spring Drive
Power Reserve
40h
72h
Jewels
25
30

Pricing

1 specs
MSRP
$2,500
$6,500

Follow this matchup

Get a note when Marathon Arctic OSAR 46mm Automatic vs Seiko Prospex LX line 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.

Seiko Prospex LX line

Owners widely report the Seiko Prospex LX line's finishing is a step up from other models, with a case that sits well on the wrist, and some praise the green sunburst dial with blue anti-reflective sapphire crystal as phenomenal. However, owners note the high MSRP limited sales, with some desiring smaller cases and a reduced price, and others experienced quality control issues such as detached second hands and peeling DLC coating, leading to concerns about fragility. On balance, owners feel the Seiko Prospex LX line was discontinued due to pricing that alienated its target market, despite its attractive dial.

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.