Side by side

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

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
Astron
SeikoAstron
MSRP $2,500

At a glance

12 of 29 specs differ
Diameter
TSAR (Tritium Search & Rescue) Diver's Quartz46mm
Astron42mm
Power Reserve
TSAR (Tritium Search & Rescue) Diver's Quartz40h
Astron40h
Water Resistance
TSAR (Tritium Search & Rescue) Diver's Quartz300m
Astron100m
MSRP
TSAR (Tritium Search & Rescue) Diver's Quartz$1,550
Astron$2,500

Full specifications

Case

7 specs
Category
Diver
GMT
Diameter
46mm
42mm
Thickness
14mm
12.4mm
Lug-to-Lug
48mm
49.5mm
Lug Width
20mm
14mm
Material
316L Stainless Steel
Titanium
Water Resistance
300m
100m

Crystal & Dial

2 specs
AR Coating
Inner
Super-clear coating
Lume
None
LumiBrite on hands and index(es)

Movement

2 specs
Caliber
Swiss High-Torque Quartz
5X83
Jewels
25
14

Pricing

1 specs
MSRP
$1,550
$2,500

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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 Astron

Owners widely praise the Seiko Astron for its spectacular technology, solar-powered quartz movement, and GPS time synchronization, making it a convenient grab-and-go option. The watch is frequently noted for its comfortable and lightweight titanium build, with some models featuring well-finished cases and robust ceramic bezels. Reviewers and owners alike highlight the dial's dynamic and shiny appearance, with textured hour markers and high-contrast edges. Accuracy is generally considered good, with figures ranging from +/- 15 seconds per month to within 1/2 second per day, easily corrected by GPS signal. However, some owners note that DST requires manual adjustment and that automatic time syncing depends on proximity to radio wave towers. The price point is a concern for some, who feel it competes with luxury watches without the same aesthetic appeal. One owner pointed out minimal lume and a slight misalignment of the minute hand on their model.

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