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

At MSRP the Marathon Steel Navigator SSNAV Quartz is the cheaper of the two at $1,000, against $3,600 for the Grand Seiko SBGX363 — a $2,600 gap before any retailer discounting.

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

The Marathon Steel Navigator SSNAV Quartz 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 Quartz or the Grand Seiko SBGX363?

The Grand Seiko SBGX363 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 SBGX363?

Both watches run quartz movements — the Marathon Steel Navigator SSNAV Quartz uses the Swiss High-Torque Quartz and the Grand Seiko SBGX363 uses the 9F51.

Side by side

Marathon Steel Navigator SSNAV QuartzvsGrand Seiko SBGX363

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 SBGX363

sbgx363g

MSRP $3,600

At a glance

10 of 29 specs differ

Diameter

Steel Navigator SSNAV Quartz41mm

SBGX36332.3mm

Power Reserve

Steel Navigator SSNAV Quartz40h

SBGX36340h

Water Resistance

Steel Navigator SSNAV Quartz60m

SBGX363100m

MSRP

Steel Navigator SSNAV Quartz$1,000

SBGX363$3,600

Full specifications

Case

7 specs

Crystal & Dial

1 specs

AR Coating

Inner

Yes

Movement

1 specs

Caliber

Swiss High-Torque Quartz

9F51

Pricing

1 specs

MSRP

$1,000

$3,600

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