Seiko Prospex Sea 1965 Heritage Diver's WatchvsSquale Super-Squale

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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 Super-Squale at true scale

Super-Squale

Diameter

40mm

38mm

Lug-to-Lug

46.4mm

n/a

Thickness

13mm

12mm

lowest

Water Resistance

300m

highest

200m

Power Reserve

72h

highest

38h

MSRP

$1,300

$1,230

lowest

Movement

Seiko 6R55

Sellita SW200-1

Case

6 specs
Diameter
40mm
38mm
Thickness
13mm
12mm
Lug-to-Lug
46.4mm
n/a
Lug Width
20mm
n/a
Material
Stainless Steel
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
Sellita SW200-1
Power Reserve
72h
38h
Jewels
24
0

Pricing

1 specs
MSRP
$1,300
$1,230
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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 Super-Squale

Owners widely praise the Squale Super-Squale for its comfortable 38mm case, vintage skin diver aesthetic, and outstanding build quality for the price, with many highlighting the beads-of-rice bracelet as a standout feature and finding it a great value "go anywhere, do anything" watch. Some owners note the stock strap is not ideal and consider alternative strap options, while one enthusiast finds the 38mm case with 18mm lug width wears small. Accuracy of the Sellita SW200-1 movement is reported as ±7–20 seconds per day, which is considered not impressive by today's standards, though adequate for reliability and serviceability. Overall, owners rate the Squale Super-Squale highly for its vintage charm, comfortable wearability, and excellent value.

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