Side by side

Marathon Steel Navigator SSNAV AutovsSugess Seestern Heritage S436-2 BB 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
Seestern Heritage S436-2 BB GMT
SugessSeestern Heritage S436-2 BB GMT
MSRP $299

At a glance

11 of 29 specs differ
Diameter
Steel Navigator SSNAV Auto41mm
Seestern Heritage S436-2 BB GMT40mm
Power Reserve
Steel Navigator SSNAV Auto40h
Seestern Heritage S436-2 BB GMT35h
Water Resistance
Steel Navigator SSNAV Auto60m
Seestern Heritage S436-2 BB GMT10m
MSRP
Steel Navigator SSNAV Auto$1,300
Seestern Heritage S436-2 BB GMT$299

Full specifications

Case

5 specs
Category
Pilot
GMT
Diameter
41mm
40mm
Thickness
11.5mm
12.2mm
Material
316L Stainless Steel
Stainless Steel
Water Resistance
60m
10m

Crystal & Dial

1 specs
Lume
None
Tritium

Movement

4 specs
Caliber
Sellita SW200-1
Seiko NH34
Beat Rate
28,800 vph
3 vph
Power Reserve
40h
35h
Complications
None
GMT, Moonphase, Date

Pricing

1 specs
MSRP
$1,300
$299

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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.

Sugess Seestern Heritage S436-2 BB GMT

Owners widely praise the Sugess Seestern Heritage S436-2 BB GMT for its 39mm sizing, 12mm thinness, and light yet solid feel, with many appreciating its legibility due to the matte dial, clear crystal, and strong lume, though one owner flags the lume as a weak point. The case finishing is considered excellent, and the blue dial and satin finish are favorably compared to alternatives. Some owners report issues with a loose bezel, with others finding it improved after tuning, and one owner notes the seconds hand is too short. The bracelet clasp lacks sufficient micro-adjustment and screw pins are difficult to remove. On balance, owners rate the Sugess Seestern Heritage S436-2 BB GMT highly for its comfortable wearability and attractive finishing at the price.

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