Side by side

Marathon GSAR (Government Search & Rescue) Diver's AutomaticvsZelos Spearfish GMT

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
Spearfish GMT
ZelosSpearfish GMT
MSRP $999

At a glance

8 of 29 specs differ
Diameter
GSAR (Government Search & Rescue) Diver's Automatic41mm
Spearfish GMT40mm
Power Reserve
GSAR (Government Search & Rescue) Diver's Automatic40h
Spearfish GMT40h
Water Resistance
GSAR (Government Search & Rescue) Diver's Automatic300m
Spearfish GMT200m
MSRP
GSAR (Government Search & Rescue) Diver's Automatic$2,100
Spearfish GMT$999

Full specifications

Case

5 specs
Category
Diver
GMT
Diameter
41mm
40mm
Thickness
14mm
13mm
Lug-to-Lug
48mm
40mm
Water Resistance
300m
200m

Crystal & Dial

1 specs
Dial Color
Anthracite
Frost

Movement

1 specs
Caliber
Sellita SW200-1
Sellita SW330-2

Pricing

1 specs
MSRP
$2,100
$999

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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.

Zelos Spearfish GMT

The Zelos Spearfish GMT is widely praised for its exceptional value, with reviewers highlighting its superb finishing, flawless machining, and a tool-less micro-adjustment clasp that exceeds its price point. It features a La Joux-Perret G100 movement with a 68-hour power reserve, achieving an average accuracy of +2.6 seconds per day, or a Miyota 9075 movement offering flier-style GMT functionality. The 40mm case and bidirectional 48-click ceramic bezel are well-executed, though one reviewer noted a minor compromise in the end link fit. Overall, owners and reviewers rate the Zelos Spearfish GMT highly for its impressive finishing and value proposition.

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