Side by side

Marathon Arctic OSAR 36mm AutomaticvsGrand Seiko SBGA427

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

Arctic OSAR 36mm Automatic
MarathonArctic OSAR 36mm Automatic
MSRP $1,200
SBGA427
Grand SeikoSBGA427
MSRP $5,800

At a glance

13 of 29 specs differ
Diameter
Arctic OSAR 36mm Automatic36mm
SBGA42739mm
Power Reserve
Arctic OSAR 36mm Automatic40h
SBGA42772h
Water Resistance
Arctic OSAR 36mm Automatic300m
SBGA427100m
MSRP
Arctic OSAR 36mm Automatic$1,200
SBGA427$5,800

Full specifications

Case

7 specs
Category
Diver
Dress
Diameter
36mm
39mm
Thickness
13mm
12.3mm
Lug-to-Lug
43.5mm
46.8mm
Lug Width
18mm
19mm
Material
316L Stainless Steel
Stainless Steel
Water Resistance
300m
100m

Crystal & Dial

2 specs
AR Coating
Inner
Yes
Dial Color
White
Black

Movement

3 specs
Caliber
Sellita SW220-1
9R65
Type
Automatic
Spring Drive
Power Reserve
40h
72h

Pricing

1 specs
MSRP
$1,200
$5,800

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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 Arctic OSAR 36mm Automatic

The Marathon Arctic OSAR 36mm Automatic is noted for its non-tritium dial option, though some owners prefer the 1-12 numeral layout found on other models. One owner found the 36mm size too small for their wrist. Overall, owners appreciate the Marathon Arctic OSAR 36mm Automatic for its non-tritium dial option.

Grand Seiko SBGA427

Grand Seiko SBGA427 owners widely praise its extensive Zaratsu polishing and the "hall of mirrors" effect created by its diamond-cut indexes, complemented by a subtle, reeded dial and a striking green seconds hand. The 39mm case is noted for its comfortable, tapered bracelet, and the 9R65 Spring Drive movement is visible through the caseback. Some owners report the highly polished Zaratsu finish is prone to scuffs and scratches, with one mentioning a scratch near 1 o'clock. The Grand Seiko SBGA427 sold for $3750. Overall, owners rate the Grand Seiko SBGA427 highly for its exceptional finishing and the unique visual appeal of its dial and indexes.

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