Side by side

Marathon GSAR (Government Search & Rescue) Diver's AutomaticvsRedux Zero-Hour

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
Zero-Hour
ReduxZero-Hour

At a glance

10 of 29 specs differ
Diameter
GSAR (Government Search & Rescue) Diver's Automatic41mm
Zero-Hour39mm
Power Reserve
GSAR (Government Search & Rescue) Diver's Automatic40h
Zero-Hour41h
Water Resistance
GSAR (Government Search & Rescue) Diver's Automatic300m
Zero-Hour200m
MSRP
GSAR (Government Search & Rescue) Diver's Automatic$2,100
Zero-Hour

Full specifications

Case

6 specs
Category
Diver
Diameter
41mm
39mm
Thickness
14mm
13.7mm
Lug-to-Lug
48mm
46.6mm
Material
316L Stainless Steel
Titanium
Water Resistance
300m
200m

Crystal & Dial

1 specs
Dial Color
Anthracite
Black

Movement

2 specs
Caliber
Sellita SW200-1
Seiko NH35
Power Reserve
40h
41h

Pricing

1 specs
MSRP
$2,100

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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.

Redux Zero-Hour

Owners widely praise the Redux Courg Zero Hour 39MM for its robust, utilitarian design inspired by pilot and dive tools, its lightweight Grade 5 titanium construction, and its comfortable wearability. The proprietary RDXB1 lume is noted for its bright initial glow, though it fades quickly. The Seiko NH53A or NH35 movement is generally considered reliable. However, multiple owners report a flimsy or fragile crown stem, and some describe the unidirectional bezel as having play or being able to rotate clockwise by one minute, though one owner reported a tight bezel with no play. The 39mm case size is considered good by some, while others find it small for larger wrists or note it looks large, with some desiring a 42mm option. One owner found the titanium finish looked slightly cheap and wished for a bezel insert. The dial is described by one owner as too busy for easy reading without glasses. The Redux Courg Zero Hour 39MM is available for $300, down from an original price of $507.

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