Jack Mason Pursuit ProvsSeiko 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.

Jack Mason Pursuit Pro at true scale

Pursuit Pro

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

Prospex Sea 1965 Heritage Diver's Watch

Diameter

40mm

40mm

Lug-to-Lug

47mm

46.4mm

lowest

Thickness

12.5mm

lowest

13mm

Water Resistance

200m

300m

highest

Power Reserve

68h

72h

highest

MSRP

$1,399

$1,300

lowest

Movement

La Joux-Perret G101

Seiko 6R55

Case

4 specs
Thickness
12.5mm
13mm
Lug-to-Lug
47mm
46.4mm
Material
316L Stainless Steel
Stainless Steel
Water Resistance
200m
300m

Crystal & Dial

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

Movement

3 specs
Caliber
La Joux-Perret G101
Seiko 6R55
Power Reserve
68h
72h
Jewels
0
24

Pricing

1 specs
MSRP
$1,399
$1,300
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Reviews

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

Jack Mason Pursuit Pro

Owners widely praise the Jack Mason Pursuit Pro's robust build quality and value, with reviewers highlighting its scratch-resistant case, grippy 120-click ceramic bezel, and excellent nighttime legibility from its Lumicast lume. The watch features a La Joux-Perret G101 automatic movement regulated in-house to ±5 seconds per day. Some owners suggest other brands for perceived reliability, and one notes the lume is not as strong as a specific Seiko model. Overall, owners and reviewers rate the Jack Mason Pursuit Pro highly for its capable tool watch design and strong value proposition.

From video reviewers

The La Joux-Perret G101 movement with a 68-hour power reserve is a shared strength. Reviewers were split on the lume performance, with some finding it exceptionally bright and others describing it as underwhelming.

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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