Side by side

Zelos Hammerhead (Tantalum LE)vsMarathon GSAR (Government Search & Rescue) Diver's Automatic

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

Hammerhead (Tantalum LE)
ZelosHammerhead (Tantalum LE)
MSRP $1,499
GSAR (Government Search & Rescue) Diver's Automatic
MarathonGSAR (Government Search & Rescue) Diver's Automatic
MSRP $2,100

At a glance

9 of 29 specs differ
Diameter
Hammerhead (Tantalum LE)44mm
GSAR (Government Search & Rescue) Diver's Automatic41mm
Power Reserve
Hammerhead (Tantalum LE)40h
GSAR (Government Search & Rescue) Diver's Automatic40h
Water Resistance
Hammerhead (Tantalum LE)300m
GSAR (Government Search & Rescue) Diver's Automatic300m
MSRP
Hammerhead (Tantalum LE)$1,499
GSAR (Government Search & Rescue) Diver's Automatic$2,100

Full specifications

Case

5 specs
Diameter
44mm
41mm
Thickness
13mm
14mm
Lug-to-Lug
44mm
48mm
Lug Width
22mm
20mm
Material
Titanium
316L Stainless Steel

Crystal & Dial

2 specs
Crystal
Domed Sapphire
Sapphire
Dial Color
Tantalum LE
Anthracite

Movement

1 specs
Caliber
Seiko NH35
Sellita SW200-1

Pricing

1 specs
MSRP
$1,499
$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.

Zelos Hammerhead (Tantalum LE)

The Zelos Hammerhead (Tantalum LE) features a forged carbon dial and bezel insert with infused lume. On balance, owners and reviewers rate the Zelos Hammerhead (Tantalum LE) highly for its unique material composition and substantial feel.

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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