Seiko Prospex Marinemaster 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 Marinemaster 1965 Heritage Diver's Watch at true scale

Prospex Marinemaster 1965 Heritage Diver's Watch

Squale 1545 at true scale

1545

Diameter

39.5mm

40mm

Lug-to-Lug

47.2mm

n/a

Thickness

12.3mm

12mm

lowest

Water Resistance

200m

300m

highest

Power Reserve

45h

highest

38h

MSRP

$2,800

$930

lowest

Movement

Seiko 6L37

Sellita SW200-1

Case

5 specs
Diameter
39.5mm
40mm
Thickness
12.3mm
12mm
Lug-to-Lug
47.2mm
n/a
Material
Stainless Steel
Steel
Water Resistance
200m
300m

Crystal & Dial

3 specs
Crystal Shape
Box
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 6L37
Sellita SW200-1
Power Reserve
45h
38h
Jewels
26
0

Pricing

1 specs
MSRP
$2,800
$930
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Reviews

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

Seiko Prospex Marinemaster 1965 Heritage Diver's Watch

The Seiko Prospex Marinemaster Marinemaster 1965 Heritage Diver's Watch is praised for its modern execution of a classic design, with reviewers noting the appealing 39.5mm case size and updated bracelet that improve wearability. Some reviewers mention the 6L37 movement has a 46-hour power reserve, with accuracy rated around -10/+15 seconds per day. A drawback identified by reviewers is the lack of tool-free micro-adjustment on the clasp. Overall, owners and reviewers find the Seiko Prospex Marinemaster Marinemaster 1965 Heritage Diver's Watch to be a handsome re-interpretation of a beloved design, with its improved wearability being a key strength.

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.