Side by side

Marathon MSAR (Medium Search & Rescue) Diver's QuartzvsSeiko Prospex Sea

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

MSAR (Medium Search & Rescue) Diver's Quartz
MarathonMSAR (Medium Search & Rescue) Diver's Quartz
MSRP $1,450
Prospex Sea
SeikoProspex Sea
MSRP $795

At a glance

10 of 29 specs differ
Diameter
MSAR (Medium Search & Rescue) Diver's Quartz36mm
Prospex Sea34mm
Power Reserve
MSAR (Medium Search & Rescue) Diver's Quartz40h
Prospex Sea40h
Water Resistance
MSAR (Medium Search & Rescue) Diver's Quartz300m
Prospex Sea200m
MSRP
MSAR (Medium Search & Rescue) Diver's Quartz$1,450
Prospex Sea$795

Full specifications

Case

6 specs
Diameter
36mm
34mm
Thickness
18mm
8.7mm
Lug-to-Lug
40.8mm
Lug Width
18mm
16mm
Material
316L Stainless Steel
Stainless Steel
Water Resistance
300m
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
6N01

Pricing

1 specs
MSRP
$1,450
$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 MSAR (Medium Search & Rescue) Diver's Quartz

Owners widely praise the Marathon MSAR (Medium Search & Rescue) Diver's Quartz for its tool-like aesthetic, bright tritium lume, and satisfying bezel action, making it enjoyable to handle and use. One owner finds the 36mm case comfortable after an initial adjustment period, while another reports accuracy within a few seconds of atomic time. On balance, owners rate the Marathon MSAR (Medium Search & Rescue) Diver's Quartz highly for its superb value and enjoyable tool-watch characteristics.

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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