Side by side

Marathon OSAR-D (Original SAR with Date) Automatic 36mmvsGrand Seiko SBGR321

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

OSAR-D (Original SAR with Date) Automatic 36mm
MarathonOSAR-D (Original SAR with Date) Automatic 36mm
MSRP $1,200
SBGR321
Grand SeikoSBGR321
MSRP $5,200

At a glance

10 of 29 specs differ
Diameter
OSAR-D (Original SAR with Date) Automatic 36mm36mm
SBGR32140mm
Power Reserve
OSAR-D (Original SAR with Date) Automatic 36mm40h
SBGR32172h
Water Resistance
OSAR-D (Original SAR with Date) Automatic 36mm300m
SBGR321100m
MSRP
OSAR-D (Original SAR with Date) Automatic 36mm$1,200
SBGR321$5,200

Full specifications

Case

6 specs
Category
Diver
Dress
Diameter
36mm
40mm
Lug-to-Lug
43.5mm
46.6mm
Lug Width
18mm
20mm
Material
316L Stainless Steel
Stainless Steel
Water Resistance
300m
100m

Crystal & Dial

1 specs
AR Coating
Inner
Yes

Movement

2 specs
Caliber
Sellita SW220-1
9S65
Power Reserve
40h
72h

Pricing

1 specs
MSRP
$1,200
$5,200

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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.

Grand Seiko SBGR321

Grand Seiko SBGR321 owners and reviewers widely praise its attractive design, compelling dimensions, and robust movement. The watch features sharp case lines with contrasting brushing and polishing, a 40mm steel case that provides presence without bulk, and 100m water resistance. Its sunburst blue dial, inspired by the dawn sky over Mount Iwate, showcases Grand Seiko's signature finishing on applied markers and hands, with a red-tipped seconds hand. The 9S65 automatic movement is noted for its precision, running within specifications, with one source reporting a +5 to -3 seconds a day rate and a 3-day power reserve. A blue rotor with a crimson rim, also inspired by Mount Iwate, is visible through the display caseback. On balance, owners and reviewers rate the Grand Seiko SBGR321 highly for its exceptional finishing and compelling blue dial design at its price point.

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