Which is cheaper, the Marathon Steel Navigator SSNAV-D Quartz or the Grand Seiko STGF387?

At MSRP the Marathon Steel Navigator SSNAV-D Quartz is the cheaper of the two at $1,300, against $4,200 for the Grand Seiko STGF387 — a $2,900 gap before any retailer discounting.

Which is bigger, the Marathon Steel Navigator SSNAV-D Quartz or the Grand Seiko STGF387?

The Marathon Steel Navigator SSNAV-D Quartz wears larger at 41mm versus 26mm for the Grand Seiko STGF387 — a 15mm difference across the dial.

Which has better water resistance, the Marathon Steel Navigator SSNAV-D Quartz or the Grand Seiko STGF387?

The Grand Seiko STGF387 is rated to 100m versus 60m for the Marathon Steel Navigator SSNAV-D Quartz.

What movement does the Marathon Steel Navigator SSNAV-D Quartz run compared to the Grand Seiko STGF387?

Both watches run quartz movements — the Marathon Steel Navigator SSNAV-D Quartz uses the Swiss High-Torque Quartz and the Grand Seiko STGF387 uses the 4J51.

Side by side

Marathon Steel Navigator SSNAV-D QuartzvsGrand Seiko STGF387

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

Marathon Steel Navigator SSNAV-D Quartz

41mm-steel-navigator-w-date-ssnav-d-on-black-3-piece-rubber-strap-kit

MSRP $1,300

Grand Seiko STGF387

stgf387g

MSRP $4,200

At a glance

10 of 29 specs differ

Diameter

Steel Navigator SSNAV-D Quartz41mm

STGF38726mm

Power Reserve

Steel Navigator SSNAV-D Quartz40h

STGF38740h

Water Resistance

Steel Navigator SSNAV-D Quartz60m

STGF387100m

MSRP

Steel Navigator SSNAV-D Quartz$1,300

STGF387$4,200

Full specifications

Case

7 specs

Crystal & Dial

1 specs

AR Coating

Inner

Yes

Movement

1 specs

Caliber

Swiss High-Torque Quartz

4J51

Pricing

1 specs

MSRP

$1,300

$4,200

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