Which is cheaper, the Marathon Arctic OSAR 46mm Automatic or the Grand Seiko SBGW306?

At MSRP the Marathon Arctic OSAR 46mm Automatic is the cheaper of the two at $2,500, against $17,900 for the Grand Seiko SBGW306 — a $15,400 gap before any retailer discounting.

Which is bigger, the Marathon Arctic OSAR 46mm Automatic or the Grand Seiko SBGW306?

The Marathon Arctic OSAR 46mm Automatic wears larger at 46mm versus 36.5mm for the Grand Seiko SBGW306 — a 9.5mm difference across the dial.

Which has better water resistance, the Marathon Arctic OSAR 46mm Automatic or the Grand Seiko SBGW306?

The Marathon Arctic OSAR 46mm Automatic is rated to 300m versus 100m for the Grand Seiko SBGW306.

Which has a longer power reserve, the Marathon Arctic OSAR 46mm Automatic or the Grand Seiko SBGW306?

The Grand Seiko SBGW306 carries a 72-hour power reserve against 40 hours on the Marathon Arctic OSAR 46mm Automatic.

What movement does the Marathon Arctic OSAR 46mm Automatic run compared to the Grand Seiko SBGW306?

The Marathon Arctic OSAR 46mm Automatic runs a automatic caliber (Sellita SW220-1), while the Grand Seiko SBGW306 runs a manual (9S64).

Side by side

Marathon Arctic OSAR 46mm AutomaticvsGrand Seiko SBGW306

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

Marathon Arctic OSAR 46mm Automatic

46mm-arctic-original-sar-w-date-on-3-piece-rubber-strap-kit-osar-d

MSRP $2,500

Grand Seiko SBGW306

sbgw306j

MSRP $17,900

At a glance

12 of 29 specs differ

Diameter

Arctic OSAR 46mm Automatic46mm

SBGW30636.5mm

Power Reserve

Arctic OSAR 46mm Automatic40h

SBGW30672h

Water Resistance

Arctic OSAR 46mm Automatic300m

SBGW306100m

MSRP

Arctic OSAR 46mm Automatic$2,500

SBGW306$17,900

Full specifications

Case

6 specs

Crystal & Dial

2 specs

AR Coating

Inner

Yes

Dial Color

White

Black

Movement

3 specs

Caliber

Sellita SW220-1

9S64

Type

Automatic

Manual

Power Reserve

40h

72h

Pricing

1 specs

MSRP

$2,500

$17,900

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