Side by side

Zelos Hammerhead (Tantalum LE)vsMarathon Steel Navigator SSNAV-D Auto

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
Steel Navigator SSNAV-D Auto
MarathonSteel Navigator SSNAV-D Auto
MSRP $1,400

At a glance

11 of 29 specs differ
Diameter
Hammerhead (Tantalum LE)44mm
Steel Navigator SSNAV-D Auto41mm
Power Reserve
Hammerhead (Tantalum LE)40h
Steel Navigator SSNAV-D Auto40h
Water Resistance
Hammerhead (Tantalum LE)300m
Steel Navigator SSNAV-D Auto60m
MSRP
Hammerhead (Tantalum LE)$1,499
Steel Navigator SSNAV-D Auto$1,400

Full specifications

Case

7 specs
Category
Diver
Pilot
Diameter
44mm
41mm
Thickness
13mm
11mm
Lug-to-Lug
44mm
48mm
Lug Width
22mm
20mm
Material
Titanium
316L Stainless Steel
Water Resistance
300m
60m

Crystal & Dial

2 specs
Crystal
Domed Sapphire
Sapphire
Dial Color
Tantalum LE
Black

Movement

1 specs
Caliber
Seiko NH35
Sellita SW220-1

Pricing

1 specs
MSRP
$1,499
$1,400

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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 Steel Navigator SSNAV-D Auto

The Marathon Steel Navigator SSNAV-D Auto is praised for its durable construction, featuring a sandblasted steel case with improved lugs, a bi-directional bezel with excellent action, and 100m water resistance. Owners appreciate the constant visibility provided by self-illuminating tritium gas tubes and the precision of its ETA F06.412 quartz movement, which offers accuracy to about 10 seconds per year. The watch includes a GMT bezel for dual timekeeping and a synthetic sapphire crystal. Overall, owners and reviewers rate the Marathon Steel Navigator SSNAV-D Auto highly for its robust tool-watch design and reliable tritium illumination.

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