Side by side

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

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 SPEEDTIMER
SeikoProspex SPEEDTIMER
MSRP $3,000

At a glance

14 of 29 specs differ
Diameter
GSAR (Government Search & Rescue) Diver's Automatic41mm
Prospex SPEEDTIMER42.5mm
Power Reserve
GSAR (Government Search & Rescue) Diver's Automatic40h
Prospex SPEEDTIMER45h
Water Resistance
GSAR (Government Search & Rescue) Diver's Automatic300m
Prospex SPEEDTIMER100m
MSRP
GSAR (Government Search & Rescue) Diver's Automatic$2,100
Prospex SPEEDTIMER$3,000

Full specifications

Case

6 specs
Category
Diver
Chronograph
Diameter
41mm
42.5mm
Thickness
14mm
15.1mm
Lug-to-Lug
48mm
50mm
Material
316L Stainless Steel
Stainless Steel
Water Resistance
300m
100m

Crystal & Dial

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

Movement

3 specs
Caliber
Sellita SW200-1
8R46
Power Reserve
40h
45h
Jewels
25
34

Pricing

1 specs
MSRP
$2,100
$3,000

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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 SPEEDTIMER

Owners widely praise the Seiko Prospex SPEEDTIMER for its attractive vintage-inspired design and compact 39mm size, with one owner finding the red dial unique and gorgeous. Reviewers and owners note the solar-powered quartz movement, with one owner considering $700 expensive for this specification and another wishing for a thinner case. The SPEEDTIMER is described as a sturdy and reliable everyday watch, though one owner questioned its resale value. Overall, owners and reviewers appreciate the Seiko Prospex SPEEDTIMER for its stylish, compact design and solar functionality, despite some finding the price point and case thickness slightly high.

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