Side by side

Marathon OSAR-D (Original SAR with Date) Automatic 41mmvsGrand Seiko SBGN027

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

OSAR-D (Original SAR with Date) Automatic 41mm
MarathonOSAR-D (Original SAR with Date) Automatic 41mm
MSRP $1,800
SBGN027
Grand SeikoSBGN027
MSRP $3,700

At a glance

11 of 29 specs differ
Diameter
OSAR-D (Original SAR with Date) Automatic 41mm41mm
SBGN02739mm
Power Reserve
OSAR-D (Original SAR with Date) Automatic 41mm40h
SBGN02740h
Water Resistance
OSAR-D (Original SAR with Date) Automatic 41mm300m
SBGN027200m
MSRP
OSAR-D (Original SAR with Date) Automatic 41mm$1,800
SBGN027$3,700

Full specifications

Case

7 specs
Category
Diver
GMT
Diameter
41mm
39mm
Thickness
13mm
12.3mm
Lug-to-Lug
43.5mm
45.9mm
Lug Width
18mm
19mm
Material
316L Stainless Steel
Stainless Steel
Water Resistance
300m
200m

Crystal & Dial

1 specs
AR Coating
Inner
Yes

Movement

2 specs
Caliber
Sellita SW220-1
9F86
Type
Automatic
Quartz

Pricing

1 specs
MSRP
$1,800
$3,700

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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 41mm

The Marathon OSAR-D (Original SAR with Date) Automatic 41mm is noted for its highly legible white dial with applied hour markers and a functional date magnifier, emphasizing its tool-watch purpose. Its Swiss-made Sellita SW200-1 movement is considered reliable and serviceable. One reviewer found the bracelet lacked refinement and preferred the rubber strap option. Overall, owners and reviewers appreciate the Marathon OSAR-D (Original SAR with Date) Automatic 41mm for its excellent legibility and robust movement.

Grand Seiko SBGN027

Owners widely praise the Grand Seiko SBGN027 for its exceptional Zaratsu polishing, compact 39mm size, and versatile monochrome aesthetic, noting its thin profile and suitability as a grab-and-go watch. The 9F quartz movement delivers highly accurate timekeeping, with one owner reporting +/- 10 seconds per year. However, some find the lume limited, the bracelet lacks micro-adjustments, and the GMT hand can be easily mistaken for the minute hand. One owner reported a black index on the bezel disappearing after a couple of months. On balance, owners rate the Grand Seiko SBGN027 highly for its premium finishing and accurate HAQ GMT movement in a wearable size.

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