Side by side

Formex Field AutomaticvsMarathon Steel Navigator SSNAV-D Auto

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

Field Automatic
FormexField Automatic
MSRP $881
Steel Navigator SSNAV-D Auto
MarathonSteel Navigator SSNAV-D Auto
MSRP $1,400

At a glance

11 of 29 specs differ
Diameter
Field Automatic40mm
Steel Navigator SSNAV-D Auto41mm
Power Reserve
Field Automatic41h
Steel Navigator SSNAV-D Auto40h
Water Resistance
Field Automatic150m
Steel Navigator SSNAV-D Auto60m
MSRP
Field Automatic$881
Steel Navigator SSNAV-D Auto$1,400

Full specifications

Case

6 specs
Category
Field
Pilot
Diameter
40mm
41mm
Thickness
10.6mm
11mm
Lug-to-Lug
46.6mm
48mm
Material
Titanium
316L Stainless Steel
Water Resistance
150m
60m

Crystal & Dial

2 specs
Dial Color
Ash Grey
Black
Lume
Super-LumiNova
None

Movement

2 specs
Caliber
Sellita SW200-1
Sellita SW220-1
Power Reserve
41h
40h

Pricing

1 specs
MSRP
$881
$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.

Formex Field Automatic

Owners widely praise the Formex Field Automatic for its lightweight, scratch-resistant Grade 2 titanium case with a hardening treatment and its comfortable wearability, especially with quick-release straps and a carbon clasp. Reviewers and owners alike highlight the dial's legibility and depth, with one noting the Petrol Blue's great color and subtle texture. The Sellita SW200-1 movement is considered a practical choice, with one owner reporting accuracy of +1 second per day. The watch offers 150m water resistance and is seen as good value under $1000. Some owners desire a matching titanium bracelet and find the numeral typography less appealing. Overall, owners and reviewers rate the Formex Field Automatic highly for its robust, comfortable titanium construction and functional dial design at its price point.

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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