Which is cheaper, the Marathon Steel Navigator SSNAV Auto or the Grand Seiko SBGX363?

At MSRP the Marathon Steel Navigator SSNAV Auto is the cheaper of the two at $1,300, against $3,600 for the Grand Seiko SBGX363 — a $2,300 gap before any retailer discounting.

Which is bigger, the Marathon Steel Navigator SSNAV Auto or the Grand Seiko SBGX363?

The Marathon Steel Navigator SSNAV Auto wears larger at 41mm versus 32.3mm for the Grand Seiko SBGX363 — a 8.7mm difference across the dial.

Which has better water resistance, the Marathon Steel Navigator SSNAV Auto or the Grand Seiko SBGX363?

The Grand Seiko SBGX363 is rated to 100m versus 60m for the Marathon Steel Navigator SSNAV Auto.

What movement does the Marathon Steel Navigator SSNAV Auto run compared to the Grand Seiko SBGX363?

The Marathon Steel Navigator SSNAV Auto runs a automatic caliber (Sellita SW200-1), while the Grand Seiko SBGX363 runs a quartz (9F51).

Side by side

Marathon Steel Navigator SSNAV AutovsGrand Seiko SBGX363

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

Marathon Steel Navigator SSNAV Auto

41mm-steel-navigator-automatic-ssnav-auto-on-ballistic-nylon

MSRP $1,300

Grand Seiko SBGX363

sbgx363g

MSRP $3,600

At a glance

11 of 29 specs differ

Diameter

Steel Navigator SSNAV Auto41mm

SBGX36332.3mm

Power Reserve

Steel Navigator SSNAV Auto40h

SBGX36340h

Water Resistance

Steel Navigator SSNAV Auto60m

SBGX363100m

MSRP

Steel Navigator SSNAV Auto$1,300

SBGX363$3,600

Full specifications

Case

7 specs

Crystal & Dial

1 specs

AR Coating

Inner

Yes

Movement

2 specs

Caliber

Sellita SW200-1

9F51

Type

Automatic

Quartz

Pricing

1 specs

MSRP

$1,300

$3,600

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