Which is cheaper, the Marathon Steel Navigator SSNAV Auto or the Grand Seiko SBGK006?

At MSRP the Marathon Steel Navigator SSNAV Auto is the cheaper of the two at $1,300, against $22,200 for the Grand Seiko SBGK006 — a $20,900 gap before any retailer discounting.

Which is bigger, the Marathon Steel Navigator SSNAV Auto or the Grand Seiko SBGK006?

The Marathon Steel Navigator SSNAV Auto wears larger at 41mm versus 39mm for the Grand Seiko SBGK006 — a 2mm difference across the dial.

Which has better water resistance, the Marathon Steel Navigator SSNAV Auto or the Grand Seiko SBGK006?

The Marathon Steel Navigator SSNAV Auto is rated to 60m versus 30m for the Grand Seiko SBGK006.

Which has a longer power reserve, the Marathon Steel Navigator SSNAV Auto or the Grand Seiko SBGK006?

The Grand Seiko SBGK006 carries a 72-hour power reserve against 40 hours on the Marathon Steel Navigator SSNAV Auto.

What movement does the Marathon Steel Navigator SSNAV Auto run compared to the Grand Seiko SBGK006?

The Marathon Steel Navigator SSNAV Auto runs a automatic caliber (Sellita SW200-1), while the Grand Seiko SBGK006 runs a manual (9S63).

Side by side

Marathon Steel Navigator SSNAV AutovsGrand Seiko SBGK006

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 SBGK006

sbgk006j

MSRP $22,200

At a glance

12 of 29 specs differ

Diameter

Steel Navigator SSNAV Auto41mm

SBGK00639mm

Power Reserve

Steel Navigator SSNAV Auto40h

SBGK00672h

Water Resistance

Steel Navigator SSNAV Auto60m

SBGK00630m

MSRP

Steel Navigator SSNAV Auto$1,300

SBGK006$22,200

Full specifications

Case

7 specs

Crystal & Dial

1 specs

AR Coating

Inner

Yes

Movement

3 specs

Caliber

Sellita SW200-1

9S63

Type

Automatic

Manual

Power Reserve

40h

72h

Pricing

1 specs

MSRP

$1,300

$22,200

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