What movement does the Marathon OSAR-D (Original SAR with Date) Automatic 36mm run compared to the Grand Seiko SBGM245?

Both watches run automatic movements — the Marathon OSAR-D (Original SAR with Date) Automatic 36mm uses the Sellita SW220-1 and the Grand Seiko SBGM245 uses the 9S66.

Side by side

Marathon OSAR-D (Original SAR with Date) Automatic 36mmvsGrand Seiko SBGM245

Q: Which is cheaper, the Marathon OSAR-D (Original SAR with Date) Automatic 36mm or the Grand Seiko SBGM245?

At MSRP the Marathon OSAR-D (Original SAR with Date) Automatic 36mm is the cheaper of the two at $1,200, against $6,100 for the Grand Seiko SBGM245 — a $4,900 gap before any retailer discounting.

Q: Which is bigger, the Marathon OSAR-D (Original SAR with Date) Automatic 36mm or the Grand Seiko SBGM245?

The Grand Seiko SBGM245 wears larger at 40.5mm versus 36mm for the Marathon OSAR-D (Original SAR with Date) Automatic 36mm — a 4.5mm difference across the dial.

Q: Which has better water resistance, the Marathon OSAR-D (Original SAR with Date) Automatic 36mm or the Grand Seiko SBGM245?

The Marathon OSAR-D (Original SAR with Date) Automatic 36mm is rated to 300m versus 200m for the Grand Seiko SBGM245.

Q: Which has a longer power reserve, the Marathon OSAR-D (Original SAR with Date) Automatic 36mm or the Grand Seiko SBGM245?

The Grand Seiko SBGM245 carries a 72-hour power reserve against 40 hours on the Marathon OSAR-D (Original SAR with Date) Automatic 36mm.

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

Marathon OSAR-D (Original SAR with Date) Automatic 36mm

36mm-original-sar-w-date-osar-d

MSRP $1,200

Grand Seiko SBGM245

sbgm245g

MSRP $6,100

At a glance

11 of 29 specs differ

Diameter

OSAR-D (Original SAR with Date) Automatic 36mm36mm

SBGM24540.5mm

Power Reserve

OSAR-D (Original SAR with Date) Automatic 36mm40h

SBGM24572h

Water Resistance

OSAR-D (Original SAR with Date) Automatic 36mm300m

SBGM245200m

MSRP

OSAR-D (Original SAR with Date) Automatic 36mm$1,200

SBGM245$6,100

Full specifications

Case

7 specs

Crystal & Dial

1 specs

AR Coating

Inner

Yes

Movement

2 specs

Caliber

Sellita SW220-1

9S66

Power Reserve

40h

72h

Pricing

1 specs

MSRP

$1,200

$6,100

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What people say

Owners + reviewers, side by side

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

Marathon OSAR-D (Original SAR with Date) Automatic 36mm

Owners widely praise the Marathon OSAR-D (Original SAR with Date) Automatic 36mm for its exceptional legibility, featuring large hour markers and MaraGlo lume. The watch is noted for its comfortable wearability and competent Swiss-made Selitta SW200-1 automatic movement, offering 300-meter water resistance and a sapphire crystal. Some enthusiasts find the price of $1,380 USD on rubber to be excessive, particularly compared to past models or other brands, and the Spartan bracelet is described as lacking refinement. On balance, owners and reviewers find the Marathon OSAR-D Automatic 36mm a reliable and functional tool watch, with its clear dial and robust build being the primary draws.

Owners widely appreciate the Grand Seiko SBGM245 for its blend of sport and luxury, with one enthusiast highlighting its superior workmanship over quartz movements. However, opinions on its size vary, as one owner found the SBGM245 too large, preferring the comfort of a different variant. Overall, owners value the Grand Seiko SBGM245 for its refined craftsmanship, though its wearability is a point of personal preference.

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