Seiko Prospex Sea Seiko Diver’s Watch 60th Anniversary Limited EditionvsThorn Diver Watch

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Measurements

Catalog photos are all shot at the same flattering size. These aren't: every case below shares one millimeter scale.

Seiko Prospex Sea Seiko Diver’s Watch 60th Anniversary Limited Edition at true scale

Prospex Sea Seiko Diver’s Watch 60th Anniversary Limited Edition

Thorn Diver Watch at true scale

Diver Watch

Diameter

40mm

40mm

Lug-to-Lug

46.4mm

lowest

47.8mm

Thickness

13mm

lowest

13.6mm

Water Resistance

300m

highest

200m

Power Reserve

72h

n/a

MSRP

$1,400

$179

lowest

Movement

Seiko 6R55

PT5000

Case

4 specs
Thickness
13mm
13.6mm
Lug-to-Lug
46.4mm
47.8mm
Material
Stainless Steel
316L stainless steel
Water Resistance
300m
200m

Crystal & Dial

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

Movement

3 specs
Caliber
Seiko 6R55
PT5000
Power Reserve
72h
0h
Jewels
24
0

Pricing

1 specs
MSRP
$1,400
$179
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Reviews

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

Seiko Prospex Sea Seiko Diver’s Watch 60th Anniversary Limited Edition

The Seiko Prospex Sea Seiko Diver’s Watch 60th Anniversary Limited Edition is praised for its comfortable MarineMaster case design and attractive wave-patterned silvery-white dial with a grey bezel insert. Owners note the 40mm case and 300m water resistance. Some owners criticize the 6R55 movement's accuracy, reporting deviations of +25/-15 seconds per day, and find the watch expensive for a limited edition with a large production run. Overall, owners find the Seiko Prospex Sea Seiko Diver’s Watch 60th Anniversary Limited Edition a comfortable and attractive watch, though some question its value proposition due to accuracy concerns and its "limited" status.

Thorn Diver Watch

Owners widely praise the Thorn 40mm NH35A Diver Automatic Watch for its impressive case finishing, featuring sharp polished chamfers and nice brushing, along with great lume and excellent wrist presence due to its 40mm case and ideal lug-to-lug measurement. The vintage aesthetic with yellowish hands and old-fashioned dial details is also a highlight, as is the explorer dial. The watch is considered well-made and offered at a great price, with the NH35 movement and 120-click bezel being impressive features. However, some owners note that the dial text on certain models does not match the logo style, and one owner reported the water resistance as 30M splash proof, not 300M. Some owners also report the watch as incredibly fragile. On balance, owners rate the Thorn 40mm NH35A Diver Automatic Watch highly for its finishing, vintage aesthetic, and value at the price point.