Sternglas MarusvsSeiko Prospex Sea 1965 Heritage Diver's 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.

Sternglas Marus at true scale

Marus

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

Prospex Sea 1965 Heritage Diver's Watch

Diameter

42mm

40mm

Lug-to-Lug

53.8mm

46.4mm

lowest

Thickness

14mm

13mm

lowest

Water Resistance

200m

300m

highest

Power Reserve

42h

72h

highest

MSRP

$485

lowest

$1,300

Movement

Miyota 8215

Seiko 6R55

Case

4 specs
Diameter
42mm
40mm
Thickness
14mm
13mm
Lug-to-Lug
53.8mm
46.4mm
Water Resistance
200m
300m

Crystal & Dial

4 specs
Crystal Shape
n/a
Curved
AR Coating
Yes
Anti-reflective coating on inner surface
Dial Color
n/a
n/a
Lume
Luminova grün
LumiBrite on hands, index(es) and bezel

Movement

3 specs
Caliber
Miyota 8215
Seiko 6R55
Power Reserve
42h
72h
Jewels
n/a
24

Pricing

1 specs
MSRP
$485
$1,300
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Reviews

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

Sternglas Marus

Owners widely praise the Sternglas Marus for its exceptionally well-built feel and bezel action, described as the best in its price range with a satisfying click and no play. Despite its 42mm diameter and 52mm lug-to-lug, the watch fits surprisingly well even on slim wrists, offering a substantial presence. The Sternglas Marus is considered an affordable and fun starting point for a watch collection.

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.

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