Side by side

Marathon GSAR (Government Search & Rescue) Diver's AutomaticvsSpinnaker Dumas 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
Dumas GMT
SpinnakerDumas GMT
MSRP $399

At a glance

7 of 29 specs differ
Diameter
GSAR (Government Search & Rescue) Diver's Automatic41mm
Dumas GMT44mm
Power Reserve
GSAR (Government Search & Rescue) Diver's Automatic40h
Dumas GMT40h
Water Resistance
GSAR (Government Search & Rescue) Diver's Automatic300m
Dumas GMT300m
MSRP
GSAR (Government Search & Rescue) Diver's Automatic$2,100
Dumas GMT$399

Full specifications

Case

4 specs
Category
Diver
GMT
Diameter
41mm
44mm
Thickness
14mm
15mm
Lug Width
20mm
22mm

Crystal & Dial

1 specs
Dial Color
Anthracite
Blue

Movement

1 specs
Caliber
Sellita SW200-1
Seiko NH34A

Pricing

1 specs
MSRP
$2,100
$399

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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.

Spinnaker Dumas GMT

Owners praise the Spinnaker Dumas GMT's satisfying lume, including on the crown, and good finishing, with one owner finding it wears well on a 17cm wrist. The watch features a Seiko NH34A GMT movement and a blue gradient dial. Reviewers note its 44mm diameter and 209g weight on the bracelet make it unsuitable for smaller wrists.

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