Side by side

Marathon Steel Navigator SSNAV-D QuartzvsGrand Seiko SBGP015

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
SBGP015
Grand SeikoSBGP015
MSRP $3,800

At a glance

9 of 29 specs differ
Diameter
Steel Navigator SSNAV-D Quartz41mm
SBGP01540mm
Power Reserve
Steel Navigator SSNAV-D Quartz40h
SBGP01540h
Water Resistance
Steel Navigator SSNAV-D Quartz60m
SBGP015200m
MSRP
Steel Navigator SSNAV-D Quartz$1,300
SBGP015$3,800

Full specifications

Case

6 specs
Category
Pilot
Diver
Diameter
41mm
40mm
Thickness
11mm
12.4mm
Lug-to-Lug
48mm
47.1mm
Material
316L Stainless Steel
Stainless Steel
Water Resistance
60m
200m

Crystal & Dial

1 specs
AR Coating
Inner
Yes

Movement

1 specs
Caliber
Swiss High-Torque Quartz
9F85

Pricing

1 specs
MSRP
$1,300
$3,800

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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 SBGP015

Owners widely praise the Grand Seiko SBGP015 for its stupendous, substantial, and classy versatility, with reviewers noting the dial print is exceptionally sharp, casting shadows under light. The Grand Seiko 9F85 quartz movement is lauded for its excellent timekeeping, with one owner purchasing it as a grab-and-go option. The watch is listed for £1900. Overall, owners rate the Grand Seiko SBGP015 highly for its sharp dial print and the accuracy of its 9F85 quartz movement.

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