Side by side

Marathon Steel Navigator SSNAV AutovsGruppo Gamma Field III GMT Date

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

Steel Navigator SSNAV Auto
MarathonSteel Navigator SSNAV Auto
MSRP $1,300
Field III GMT Date
Gruppo GammaField III GMT Date
MSRP $459

At a glance

13 of 29 specs differ
Diameter
Steel Navigator SSNAV Auto41mm
Field III GMT Date40mm
Power Reserve
Steel Navigator SSNAV Auto40h
Field III GMT Date41h
Water Resistance
Steel Navigator SSNAV Auto60m
Field III GMT Date200m
MSRP
Steel Navigator SSNAV Auto$1,300
Field III GMT Date$459

Full specifications

Case

7 specs
Category
Pilot
GMT
Diameter
41mm
40mm
Thickness
11.5mm
14mm
Lug-to-Lug
48mm
48.5mm
Lug Width
20mm
22mm
Material
316L Stainless Steel
Stainless Steel
Water Resistance
60m
200m

Crystal & Dial

2 specs
AR Coating
Inner
Yes
Lume
None
Super-LumiNova

Movement

3 specs
Caliber
Sellita SW200-1
Seiko Instruments NH38A
Power Reserve
40h
41h
Complications
None
GMT, Date

Pricing

1 specs
MSRP
$1,300
$459

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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 Steel Navigator SSNAV Auto

The Marathon Steel Navigator SSNAV Auto is praised for its high-accuracy quartz movement, with owners noting its comfort and reliable performance. Reviewers highlight its functional tool-watch appeal, featuring a sandblasted steel case, tritium tubes for constant low-light visibility, and 100-meter water resistance. One owner finds the 41mm case runs a bit small. The Marathon Steel Navigator SSNAV Auto utilizes an ETA F06.412 quartz movement with a claimed accuracy of +/- 10 seconds per year and includes a GMT bidirectional bezel. Overall, owners and reviewers rate the Marathon Steel Navigator SSNAV Auto highly for its comfortable wear and dependable, high-accuracy quartz movement.

Gruppo Gamma Field III GMT Date

Owners widely praise the Gruppo Gamma Field III GMT Date for its awesome looks, quality, and good value. The watch features a 40mm brushed 316L stainless steel case, box sapphire crystal, and 200m water resistance, powered by a Seiko NH34A movement. Some reviewers note the NH34A movement's accuracy can range from -20~+40 seconds per day, though one reviewer reported +5 seconds per day with a regulated movement. The dial's dense layout with Arabic numerals can be overwhelming for some, and one owner found the size unsuitable for smaller wrists. On balance, owners rate the Gruppo Gamma Field III GMT Date highly for its impressive finishing and toolish design at its price point.

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