Side by side

Marathon GSAR (Government Search & Rescue) Diver's AutomaticvsSeiko Prospex LX line

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

GSAR (Government Search & Rescue) Diver's Automatic
MarathonGSAR (Government Search & Rescue) Diver's Automatic
MSRP $2,100
Prospex LX line
SeikoProspex LX line
MSRP $6,500

At a glance

13 of 29 specs differ
Diameter
GSAR (Government Search & Rescue) Diver's Automatic41mm
Prospex LX line44.8mm
Power Reserve
GSAR (Government Search & Rescue) Diver's Automatic40h
Prospex LX line72h
Water Resistance
GSAR (Government Search & Rescue) Diver's Automatic300m
Prospex LX line300m
MSRP
GSAR (Government Search & Rescue) Diver's Automatic$2,100
Prospex LX line$6,500

Full specifications

Case

5 specs
Diameter
41mm
44.8mm
Thickness
14mm
15.7mm
Lug-to-Lug
48mm
50.9mm
Lug Width
20mm
22mm
Material
316L Stainless Steel
Titanium

Crystal & Dial

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

Movement

4 specs
Caliber
Sellita SW200-1
5R65
Type
Automatic
Spring Drive
Power Reserve
40h
72h
Jewels
25
30

Pricing

1 specs
MSRP
$2,100
$6,500

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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 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.

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.

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