Seiko Prospex Marinemaster 1965 Heritage Diver's WatchvsZENEA ULA Diver

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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

ZENEA ULA Diver at true scale

ULA Diver

Diameter

39.5mm

41mm

Lug-to-Lug

47.2mm

lowest

48mm

Thickness

12.3mm

12mm

lowest

Water Resistance

200m

300m

highest

Power Reserve

45h

n/a

MSRP

$2,800

n/a

Movement

Seiko 6L37

ETA 2824-2

Case

4 specs
Diameter
39.5mm
41mm
Thickness
12.3mm
12mm
Lug-to-Lug
47.2mm
48mm
Water Resistance
200m
300m

Crystal & Dial

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

Movement

3 specs
Caliber
Seiko 6L37
ETA 2824-2
Power Reserve
45h
n/a
Jewels
26
0

Pricing

1 specs
MSRP
$2,800
n/a
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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.

ZENEA ULA Diver

Owners praise the Zenea Ula Diver's unique, well-made bezel and the comfort of its slide-adjust bracelet. Reviewers note its robust build and comfortable 41mm size, with one enthusiast highlighting its sapphire crystal and ceramic bezel. One owner reports zero issues with the watch. Overall, owners and reviewers rate the Zenea Ula Diver highly for its practical design and comfortable wearability at the price.