Side by side

Marathon Arctic OSAR 46mm AutomaticvsSeiko Ice Diver

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
Ice Diver
SeikoIce Diver
MSRP $900

At a glance

12 of 29 specs differ
Diameter
Arctic OSAR 46mm Automatic46mm
Ice Diver45mm
Power Reserve
Arctic OSAR 46mm Automatic40h
Ice Diver70h
Water Resistance
Arctic OSAR 46mm Automatic300m
Ice Diver200m
MSRP
Arctic OSAR 46mm Automatic$2,500
Ice Diver$900

Full specifications

Case

6 specs
Diameter
46mm
45mm
Thickness
13mm
12.9mm
Lug-to-Lug
43.5mm
52.6mm
Lug Width
18mm
20mm
Material
316L Stainless Steel
Stainless Steel
Water Resistance
300m
200m

Crystal & Dial

2 specs
Dial Color
White
Black
Lume
None
LumiBrite

Movement

3 specs
Caliber
Sellita SW220-1
6R35
Power Reserve
40h
70h
Jewels
25
24

Pricing

1 specs
MSRP
$2,500
$900

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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.

Seiko Ice Diver

Owners widely praise the Seiko Prospex Sea for its robust build, classic dive watch design, and excellent value, with many highlighting its strong lume and comfortable wearability. Reviewers consistently flag its superior bezel action and overall finishing as standout features for its price point. Some owners find the 43mm case size substantial, with one noting it felt big, thick, and heavy on a 6.5-inch wrist, though others consider it a perfect size. The movement's power reserve is noted as less than newer variants by one reviewer. Overall, owners and reviewers rate the Seiko Prospex Sea highly for its classic design and robust build at an accessible price.

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