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

At MSRP the Marathon Steel Navigator SSNAV Quartz is the cheaper of the two at $1,000, against $4,200 for the Grand Seiko STGF387 — a $3,200 gap before any retailer discounting.

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

The Marathon Steel Navigator SSNAV 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 Quartz or the Grand Seiko STGF387?

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

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

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

Side by side

Marathon Steel Navigator SSNAV QuartzvsGrand Seiko STGF387

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

Marathon Steel Navigator SSNAV Quartz

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

MSRP $1,000

Grand Seiko STGF387

stgf387g

MSRP $4,200

At a glance

10 of 29 specs differ

Diameter

Steel Navigator SSNAV Quartz41mm

STGF38726mm

Power Reserve

Steel Navigator SSNAV Quartz40h

STGF38740h

Water Resistance

Steel Navigator SSNAV Quartz60m

STGF387100m

MSRP

Steel Navigator SSNAV Quartz$1,000

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

$1,000

$4,200

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