Side by side

Marathon Arctic OSAR 36mm AutomaticvsGrand Seiko SLGA001

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
SLGA001
Grand SeikoSLGA001
MSRP $11,100

At a glance

11 of 29 specs differ
Diameter
Arctic OSAR 36mm Automatic36mm
SLGA00146.9mm
Power Reserve
Arctic OSAR 36mm Automatic40h
SLGA001120h
Water Resistance
Arctic OSAR 36mm Automatic300m
SLGA001100m
MSRP
Arctic OSAR 36mm Automatic$1,200
SLGA001$11,100

Full specifications

Case

6 specs
Diameter
36mm
46.9mm
Thickness
13mm
16mm
Lug-to-Lug
43.5mm
50.8mm
Lug Width
18mm
23mm
Material
316L Stainless Steel
Titanium
Water Resistance
300m
100m

Crystal & Dial

1 specs
Dial Color
White
Black

Movement

3 specs
Caliber
Sellita SW220-1
9RA5
Type
Automatic
Spring Drive
Power Reserve
40h
120h

Pricing

1 specs
MSRP
$1,200
$11,100

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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 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 SLGA001

The Grand Seiko SLGA001 is praised for its impressive technical achievements, including a new, slimmer Spring Drive movement with a five-day power reserve and exceptional accuracy of ±0.5 seconds per day. Reviewers note the 47mm titanium case, despite its substantial dimensions, wears more comfortably due to its titanium construction, short lugs, and virtually scratch-proof finish. The watch features a 600-meter water resistance and is limited to 700 pieces, priced at $11,100. On balance, reviewers consider the Grand Seiko SLGA001 a highly capable dive watch, with its technological advancements in the Spring Drive movement being a key highlight.

From video reviewers

The watch's Spring Drive movement, specifically the Cal.9RA5, offers a 120-hour power reserve. A notable trade-off is the watch's relatively large size, with a case diameter of 46.9mm and thickness of 16.0mm, which may not suit those with smaller wrists. The high price point may be a trade-off for some buyers.

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