Side by side

Hamilton Khaki Aviation Day Date AutovsMarathon GSAR (Government Search & Rescue) Diver's Automatic

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

Khaki Aviation Day Date Auto
HamiltonKhaki Aviation Day Date Auto
MSRP $1,125
GSAR (Government Search & Rescue) Diver's Automatic
MarathonGSAR (Government Search & Rescue) Diver's Automatic
MSRP $2,100

At a glance

10 of 29 specs differ
Diameter
Khaki Aviation Day Date Auto42mm
GSAR (Government Search & Rescue) Diver's Automatic41mm
Power Reserve
Khaki Aviation Day Date Auto80h
GSAR (Government Search & Rescue) Diver's Automatic40h
Water Resistance
Khaki Aviation Day Date Auto100m
GSAR (Government Search & Rescue) Diver's Automatic300m
MSRP
Khaki Aviation Day Date Auto$1,125
GSAR (Government Search & Rescue) Diver's Automatic$2,100

Full specifications

Case

6 specs
Category
Pilot
Diver
Diameter
42mm
41mm
Thickness
12.15mm
14mm
Lug-to-Lug
46mm
48mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
100m
300m

Crystal & Dial

1 specs
Dial Color
Black
Anthracite

Movement

2 specs
Caliber
H-40
Sellita SW200-1
Power Reserve
80h
40h

Pricing

1 specs
MSRP
$1,125
$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.

Hamilton Khaki Aviation Day Date Auto

Owners and reviewers widely praise the Hamilton Khaki Aviation Day Date Auto for its handsome, legible dial with raised indices and day/date complications, and its versatile, modern pilot watch design. The fully brushed case and good lume are noted strengths, with one owner finding it wears comfortably on a NATO strap. The H-10 caliber offers an 80-hour power reserve, though its decoration and regulation are less refined. Some find the 42mm size large and the skeletonized hour hand tip visually unappealing, while others note the AR coating is decent but not exceptional. Overall, owners and reviewers rate the Hamilton Khaki Aviation Day Date Auto highly for its practical design and value at its price point.

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.

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