Seiko Prospex Sea 1965 Heritage Diver's WatchvsSquale 1545

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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 1965 Heritage Diver's Watch at true scale

Prospex Sea 1965 Heritage Diver's Watch

Squale 1545 at true scale

1545

Diameter

40mm

40mm

Lug-to-Lug

46.4mm

n/a

Thickness

13mm

12mm

lowest

Water Resistance

300m

300m

Power Reserve

72h

highest

38h

MSRP

$1,300

$930

lowest

Movement

Seiko 6R55

Sellita SW200-1

Case

3 specs
Thickness
13mm
12mm
Lug-to-Lug
46.4mm
n/a
Material
Stainless Steel
Steel

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
Sellita SW200-1
Power Reserve
72h
38h
Jewels
24
0

Pricing

1 specs
MSRP
$1,300
$930
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Reviews

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

Seiko Prospex Sea 1965 Heritage Diver's Watch

Owners widely praise the Seiko Prospex Sea 1965 Heritage Diver's Watch for its refined engineering, comfortable 40mm case, and improved 300m water resistance. The watch is noted for its better build quality and finishing compared to some alternatives, featuring a mix of polished and brushed surfaces, with specific callouts for the jewel-toned teal dial with a rippling-water pattern. Some owners consider the price fair, while others suggest it is too high. Accuracy figures vary, with some owners reporting their 6R55 movement performs well within +/- 10 seconds per day, while others note theirs runs slow or have concerns about QC for the price. The bracelet, while improved, lacks modern features like quick-release or extensive micro-adjustments. Overall, owners and reviewers rate the Seiko Prospex Sea 1965 Heritage Diver's Watch highly for its refined design and build quality at its price point.

Squale 1545

Owners widely praise the Squale 1545 for its solid build quality, attractive appearance, and excellent value, with many highlighting its impressive tuxedo black lacquer dial and exceptionally bright lume. Some owners note the clasp as a point of dissatisfaction, a common issue across various price points, and one reviewer points out minor flaws on the steel bracelet including soft end links and a clasp that scratches the bracelet. The Squale 1545 is considered a reliable and versatile everyday watch with historical design precedent. Overall, owners and reviewers rate the Squale 1545 highly for its impressive finishing and value at its price point.

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