Side by side

Marathon Steel Navigator SSNAV AutovsSpinnaker Dumas GMT

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
Dumas GMT
SpinnakerDumas GMT
MSRP $399

At a glance

8 of 29 specs differ
Diameter
Steel Navigator SSNAV Auto41mm
Dumas GMT44mm
Power Reserve
Steel Navigator SSNAV Auto40h
Dumas GMT40h
Water Resistance
Steel Navigator SSNAV Auto60m
Dumas GMT300m
MSRP
Steel Navigator SSNAV Auto$1,300
Dumas GMT$399

Full specifications

Case

5 specs
Category
Pilot
GMT
Diameter
41mm
44mm
Thickness
11.5mm
15mm
Lug Width
20mm
22mm
Water Resistance
60m
300m

Crystal & Dial

1 specs
Dial Color
Black
Blue

Movement

1 specs
Caliber
Sellita SW200-1
Seiko NH34A

Pricing

1 specs
MSRP
$1,300
$399

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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.

Spinnaker Dumas GMT

Owners praise the Spinnaker Dumas GMT's satisfying lume, including on the crown, and good finishing, with one owner finding it wears well on a 17cm wrist. The watch features a Seiko NH34A GMT movement and a blue gradient dial. Reviewers note its 44mm diameter and 209g weight on the bracelet make it unsuitable for smaller wrists.

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