Side by side

Marathon Arctic Steel NavigatorvsSeiko Prospex Sea

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

Arctic Steel Navigator
MarathonArctic Steel Navigator
MSRP $1,000
Prospex Sea
SeikoProspex Sea
MSRP $795

At a glance

12 of 29 specs differ
Diameter
Arctic Steel Navigator41mm
Prospex Sea34mm
Power Reserve
Arctic Steel Navigator40h
Prospex Sea40h
Water Resistance
Arctic Steel Navigator60m
Prospex Sea200m
MSRP
Arctic Steel Navigator$1,000
Prospex Sea$795

Full specifications

Case

7 specs
Category
Pilot
Diver
Diameter
41mm
34mm
Thickness
11mm
8.7mm
Lug-to-Lug
48mm
40.8mm
Lug Width
20mm
16mm
Material
316L Stainless Steel
Stainless Steel
Water Resistance
60m
200m

Crystal & Dial

3 specs
AR Coating
Inner
Anti-reflective coating on inner surface
Dial Color
White
Black
Lume
None
LumiBrite on hands and index(es)

Movement

1 specs
Caliber
Swiss High-Torque Quartz
6N01

Pricing

1 specs
MSRP
$1,000
$795

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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 Steel Navigator

The Marathon Arctic Steel Navigator is praised for its pragmatic, no-nonsense design and comfortable wearability due to its thinner, ergonomic steel case. Owners and reviewers highlight its highly accurate ETA F06.412 quartz movement, which offers exceptional timekeeping and a seven-year battery life with a field-serviceable battery port. One owner reported their Arctic Steel Navigator's pip fell out shortly after unboxing, and the bezel later became gritty and hard to turn, though another owner found success cleaning their gritty bezel with soap and water. A reviewer noted a preference for a different strap design for a cleaner tail tuck. On balance, owners and reviewers rate the Marathon Arctic Steel Navigator highly for its pragmatic design and accurate, reliable quartz movement.

Seiko Prospex Sea

Owners widely praise the Seiko Prospex Sea for its excellent value, robust build, and superb lume, with many appreciating its comfortable wearability due to its case shape and lug-to-lug distance. Reviewers consistently highlight its impressive finishing and classic dive watch design, often noting the bright LumiBrite lume. Some owners find the watch to be large, thick, and heavy, while others consider it the perfect size, indicating a split opinion on wearability for smaller wrists. The power reserve from some movements is noted as less than newer variants, and the clasp quality receives mixed feedback. Overall, owners and reviewers rate the Seiko Prospex Sea highly for its exceptional finishing and value proposition in the dive watch market.

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