Side by side

Marathon GPQ-D (Officer's Quartz with Date) Field WatchvsSeiko Prospex Sea

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

GPQ-D (Officer's Quartz with Date) Field Watch
MarathonGPQ-D (Officer's Quartz with Date) Field Watch
MSRP $650
Prospex Sea
SeikoProspex Sea
MSRP $795

At a glance

10 of 29 specs differ
Diameter
GPQ-D (Officer's Quartz with Date) Field Watch36mm
Prospex Sea34mm
Power Reserve
GPQ-D (Officer's Quartz with Date) Field Watch40h
Prospex Sea40h
Water Resistance
GPQ-D (Officer's Quartz with Date) Field Watch30m
Prospex Sea200m
MSRP
GPQ-D (Officer's Quartz with Date) Field Watch$650
Prospex Sea$795

Full specifications

Case

6 specs
Category
Field
Diver
Diameter
36mm
34mm
Thickness
11mm
8.7mm
Lug-to-Lug
44mm
40.8mm
Material
316L Stainless Steel
Stainless Steel
Water Resistance
30m
200m

Crystal & Dial

2 specs
AR Coating
Inner
Anti-reflective coating on inner surface
Lume
None
LumiBrite on hands and index(es)

Movement

1 specs
Caliber
Swiss High-Torque Quartz (3J, EOL)
6N01

Pricing

1 specs
MSRP
$650
$795

Follow this matchup

Get a note when Marathon GPQ-D (Officer's Quartz with Date) Field Watch vs Seiko Prospex Sea gets more votes, a community discussion, or a price drop. No account needed.

What people say

Owners + reviewers, side by side

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

Marathon GPQ-D (Officer's Quartz with Date) Field Watch

Marathon GPQ-D (Officer's Quartz with Date) Field Watch owners praise its tritium tubes, Mil-spec designation, and scratch-resistant case finish, with some finding the 36mm size practical for field use. However, some owners criticize its perceived overpriced nature, thick case, and squared-off lugs, while others point to the composite case material, 30m water resistance, and unbranded movement as drawbacks. On balance, owners are divided on the Marathon GPQ-D (Officer's Quartz with Date) Field Watch, with opinions split on its value and design features.

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.

Keep exploring

More watches worth a look

Matched to the watches above on size, movement, style and price — microbrands first. Open any one to dig in.

Adjacent matchups

People also compared

Comparisons nearby in the catalog — alternatives to the watches above paired against the matchup.