Side by side

Marathon Arctic OSAR 46mm AutomaticvsSeestern S446 GMT

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

Arctic OSAR 46mm Automatic
MarathonArctic OSAR 46mm Automatic
MSRP $2,500
S446 GMT
SeesternS446 GMT
MSRP $299

At a glance

13 of 29 specs differ
Diameter
Arctic OSAR 46mm Automatic46mm
S446 GMT39.5mm
Power Reserve
Arctic OSAR 46mm Automatic40h
S446 GMT41hh
Water Resistance
Arctic OSAR 46mm Automatic300m
S446 GMT100m
MSRP
Arctic OSAR 46mm Automatic$2,500
S446 GMT$299

Full specifications

Case

5 specs
Category
Diver
GMT
Diameter
46mm
39.5mm
Lug-to-Lug
43.5mm
47mm
Lug Width
18mm
20mm
Water Resistance
300m
100m

Crystal & Dial

2 specs
Crystal Shape
Flat
Domed
Dial Color
White
Cream

Movement

5 specs
Caliber
Sellita SW220-1
Seiko NH34A GMT
Beat Rate
28,800 vph
3 vph
Power Reserve
40h
41hh
Jewels
25
24
Complications
None
GMT, Date

Pricing

1 specs
MSRP
$2,500
$299

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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 46mm Automatic

Owners widely praise the Marathon Arctic OSAR 46mm Automatic for its overbuilt toughness and industrial, instrument-like aesthetic, with some preferring the Arctic dial for legibility. One owner notes the automatic movement may be unnecessary for rough use compared to a quartz option. Reviewers mention the MaraGlo luminous paint and a Sellita SW200-1 automatic movement. Some owners question its rising price and luxury positioning, with one reporting poor lume and movement performance. Overall, owners value the Marathon Arctic OSAR 46mm Automatic for its robust build and utilitarian design.

Seestern S446 GMT

Owners widely praise the Seestern S446 GMT for its stunning finishing and extreme value, with a sapphire crystal and adjustable clasp. The winding action is noted as buttery smooth, and the 39.5mm case size is considered very wearable. Some owners, however, flag the lume as a weak point and one owner found the bracelet clasp lacked sufficient micro-adjustment. The Seestern S446 GMT is considered an extreme value for the dollar. Overall, owners rate the Seestern S446 GMT highly for its exceptional finishing and value proposition at its price point.

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