Side by side

Marathon OSAR-D (Original SAR with Date) Automatic 46mmvsSeiko Prospex LX line

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

OSAR-D (Original SAR with Date) Automatic 46mm
MarathonOSAR-D (Original SAR with Date) Automatic 46mm
MSRP $2,500
Prospex LX line
SeikoProspex LX line
MSRP $5,500

At a glance

14 of 29 specs differ
Diameter
OSAR-D (Original SAR with Date) Automatic 46mm46mm
Prospex LX line44.8mm
Power Reserve
OSAR-D (Original SAR with Date) Automatic 46mm40h
Prospex LX line72h
Water Resistance
OSAR-D (Original SAR with Date) Automatic 46mm300m
Prospex LX line200m
MSRP
OSAR-D (Original SAR with Date) Automatic 46mm$2,500
Prospex LX line$5,500

Full specifications

Case

7 specs
Category
Diver
GMT
Diameter
46mm
44.8mm
Thickness
13mm
14.7mm
Lug-to-Lug
43.5mm
50.9mm
Lug Width
18mm
22mm
Material
316L Stainless Steel
Titanium
Water Resistance
300m
200m

Crystal & Dial

2 specs
AR Coating
Inner
Super-clear coating
Lume
None
LumiBrite on hands and index(es)

Movement

4 specs
Caliber
Sellita SW220-1
5R66
Type
Automatic
Spring Drive
Power Reserve
40h
72h
Jewels
25
30

Pricing

1 specs
MSRP
$2,500
$5,500

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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 OSAR-D (Original SAR with Date) Automatic 46mm

The Marathon OSAR-D (Original SAR with Date) Automatic 46mm is widely regarded as a rugged and legible timepiece, featuring a familiar geometric dial with MaraGlo lume and a white dial with applied hour markers that enhance legibility. Owners and reviewers note its 300-meter water resistance and the reliable Swiss-made Sellita SW200-1 automatic movement with improved shock protection. The watch is described as large, thick, and heavy, with some owners finding it comfortable on the wrist while others note its substantial presence, particularly at a table. Overall, owners and reviewers appreciate the Marathon OSAR-D (Original SAR with Date) Automatic 46mm for its rugged build and excellent legibility.

Seiko Prospex LX line

Owners widely report the dial's blue-green sunburst is phenomenal, and the sapphire glass features blue AR coating. Some owners feel the high price limits discounts and sales, with one AD noting extremely low sales due to the cost. One owner reported DLC peeling off a two-week-old watch, and another noted quality control issues like bezel inserts and fallen second hands. On balance, owners consider the Seiko Prospex LX line a nicely built watch, though pricing led to poor sales and its discontinuation.

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