Side by side

Marathon TSAR (Tritium Search & Rescue) Diver's QuartzvsSeiko Prospex Sea

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

TSAR (Tritium Search & Rescue) Diver's Quartz
MarathonTSAR (Tritium Search & Rescue) Diver's Quartz
MSRP $1,550
Prospex Sea
SeikoProspex Sea
MSRP $795

At a glance

10 of 29 specs differ
Diameter
TSAR (Tritium Search & Rescue) Diver's Quartz46mm
Prospex Sea34mm
Power Reserve
TSAR (Tritium Search & Rescue) Diver's Quartz40h
Prospex Sea40h
Water Resistance
TSAR (Tritium Search & Rescue) Diver's Quartz300m
Prospex Sea200m
MSRP
TSAR (Tritium Search & Rescue) Diver's Quartz$1,550
Prospex Sea$795

Full specifications

Case

6 specs
Diameter
46mm
34mm
Thickness
14mm
8.7mm
Lug-to-Lug
48mm
40.8mm
Lug Width
20mm
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
$1,550
$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 TSAR (Tritium Search & Rescue) Diver's Quartz

Owners widely praise the Marathon TSAR (Tritium Search & Rescue) Diver's Quartz for its ISO 6425 certification and practical, everyday wearability, with one owner noting the movement sets and ticks fine with expected quartz accuracy. The bezel and crystal are also described as great. One owner reports the 41mm TSAR wears small and has a field watch aesthetic, while another notes the TSAR Medium, listed at 12mm thick, visually appears thicker. Overall, owners rate the Marathon TSAR (Tritium Search & Rescue) Diver's Quartz highly for its robust build and practical design.

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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