Side by side

Marathon TSAR (Tritium Search & Rescue) Diver's QuartzvsSeiko Prospex Sea 1970 Heritage Diver's Black Series Limited Edition

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

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 1970 Heritage Diver's Black Series Limited Edition

Owners widely praise the Seiko Prospex Sea 1970 Heritage Diver's Black Series Limited Edition for its attractive, well-made design and gorgeous dial, noting its jewel-toned teal color and rippling-water pattern. The bezel action is smooth with a muted sound, and the case and bracelet offer a more comfortable feel than previous iterations. However, multiple owners express disappointment with the accuracy of the 6R movement at its price point, with some noting theirs runs slow, and consider the price too high. The steep rehaut and marker size make the 24-hour numbers difficult to read, and some find the case design makes the watch feel top-heavy despite wearing smaller. Overall, owners rate the Seiko Prospex Sea 1970 Heritage Diver's Black Series Limited Edition highly for its striking dial and refined case design, despite concerns regarding movement accuracy at its price.

At a glance

13 of 29 specs differ
Diameter
TSAR (Tritium Search & Rescue) Diver's Quartz46mm
Prospex Sea 1970 Heritage Diver's Black Series Limited Edition44mm
Power Reserve
TSAR (Tritium Search & Rescue) Diver's Quartz40h
Prospex Sea 1970 Heritage Diver's Black Series Limited Edition50h
Water Resistance
TSAR (Tritium Search & Rescue) Diver's Quartz300m
Prospex Sea 1970 Heritage Diver's Black Series Limited Edition200m
MSRP
TSAR (Tritium Search & Rescue) Diver's Quartz$1,550
Prospex Sea 1970 Heritage Diver's Black Series Limited Edition$3,300

Full specifications

Case

5 specs
Diameter
46mm
44mm
Thickness
14mm
13mm
Lug-to-Lug
48mm
49.3mm
Material
316L Stainless Steel
Stainless Steel
Water Resistance
300m
200m

Crystal & Dial

3 specs
Crystal Shape
Flat
Curved
AR Coating
Inner
Anti-reflective coating on inner surface
Lume
None
LumiBrite on hands, index(es) and bezel

Movement

4 specs
Caliber
Swiss High-Torque Quartz
8L35
Type
Quartz
Automatic
Power Reserve
40h
50h
Jewels
25
26

Pricing

1 specs
MSRP
$1,550
$3,300
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