Side by side

Marathon Steel Navigator SSNAV-D AutovsGrand Seiko SLGW007

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

Steel Navigator SSNAV-D Auto
MarathonSteel Navigator SSNAV-D Auto
MSRP $1,400
SLGW007
Grand SeikoSLGW007
MSRP $10,000

At a glance

11 of 29 specs differ
Diameter
Steel Navigator SSNAV-D Auto41mm
SLGW00738.6mm
Power Reserve
Steel Navigator SSNAV-D Auto40h
SLGW00780h
Water Resistance
Steel Navigator SSNAV-D Auto60m
SLGW00730m
MSRP
Steel Navigator SSNAV-D Auto$1,400
SLGW007$10,000

Full specifications

Case

6 specs
Category
Pilot
Dress
Diameter
41mm
38.6mm
Thickness
11mm
9.95mm
Lug-to-Lug
48mm
45mm
Material
316L Stainless Steel
Stainless Steel
Water Resistance
60m
30m

Crystal & Dial

1 specs
AR Coating
Inner
Yes

Movement

3 specs
Caliber
Sellita SW220-1
9SA4
Type
Automatic
Manual
Power Reserve
40h
80h

Pricing

1 specs
MSRP
$1,400
$10,000

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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 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.

Grand Seiko SLGW007

Grand Seiko SLGW007 owners and reviewers praise its compact 38.6mm x 9.95mm Evolution 9 case and the textured "Moonlit Birch" dial, described as moody, elegant, and captivating. The technically credible 9SA4 hand-wound movement with an 80-hour power reserve is also highlighted. Its 30m water resistance and lack of lume are noted as appropriate for a dress watch. Overall, owners and reviewers rate the Grand Seiko SLGW007 highly for its refined case, captivating dial, and updated movement.

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