Side by side

Marathon Steel Navigator SSNAV-D QuartzvsGrand Seiko SLGC009

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

Steel Navigator SSNAV-D Quartz
MarathonSteel Navigator SSNAV-D Quartz
MSRP $1,300
SLGC009
Grand SeikoSLGC009
MSRP $16,900

At a glance

12 of 29 specs differ
Diameter
Steel Navigator SSNAV-D Quartz41mm
SLGC00943mm
Power Reserve
Steel Navigator SSNAV-D Quartz40h
SLGC00972h
Water Resistance
Steel Navigator SSNAV-D Quartz60m
SLGC009200m
MSRP
Steel Navigator SSNAV-D Quartz$1,300
SLGC009$16,900

Full specifications

Case

7 specs
Category
Pilot
Chronograph
Diameter
41mm
43mm
Thickness
11mm
15.6mm
Lug-to-Lug
48mm
50mm
Lug Width
20mm
23mm
Material
316L Stainless Steel
Titanium
Water Resistance
60m
200m

Crystal & Dial

1 specs
AR Coating
Inner
Yes

Movement

3 specs
Caliber
Swiss High-Torque Quartz
9SC5
Type
Quartz
Automatic
Power Reserve
40h
72h

Pricing

1 specs
MSRP
$1,300
$16,900

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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-D Quartz

The Marathon Steel Navigator SSNAV-D Quartz is widely praised for its high-accuracy Swiss Made ETA F06.412 HeavyDrive-PreciDrive quartz movement, rated at +/- 10 seconds per year, and its tritium lume. Reviewers and owners highlight its functional tool-watch appeal, noting the sandblasted steel case with an asymmetric design, excellent bi-directional bezel action, and drilled lug holes. Some owners find it perfectly suited for sport/rugged use, though not necessarily as an everyday watch. One owner points out that the case's distinctive asymmetry deviates from current aesthetic trends. Overall, owners and reviewers rate the Marathon Steel Navigator SSNAV-D Quartz highly for its robust build and exceptional timekeeping accuracy at its price point.

Grand Seiko SLGC009

Owners widely report the Grand Seiko SLGC009 is perceived as "big" but "not obnoxious," with some finding its bold, aggressive, and futuristic design appealing while others deem it too daring for the brand. Opinions are split on its aesthetic, with comparisons ranging from a G-Shock to the Cybertruck. One owner noted a desire for a more offset clasp. The movement is praised by some, though the dial color and hour indexes drew criticism from one voice. The Grand Seiko SLGC009's rumored discontinuation is speculated to potentially aid in value retention. On balance, owners are divided on the Grand Seiko SLGC009's polarizing design, with its movement and wearability being points of discussion.

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