Beaufort SeatrekkervsSeiko Prospex Marinemaster Marinemaster 1965 Diver’s Modern Re-interpretation

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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.

Beaufort Seatrekker at true scale

Seatrekker

Seiko Prospex Marinemaster Marinemaster 1965 Diver’s Modern Re-interpretation at true scale

Prospex Marinemaster Marinemaster 1965 Diver’s Modern Re-interpretation

Diameter

39mm

39.5mm

Lug-to-Lug

n/a

47.2mm

Thickness

12.6mm

12.3mm

lowest

Water Resistance

200m

200m

Power Reserve

42h

45h

highest

MSRP

$345

lowest

$2,800

Movement

Miyota 9039

Seiko 6L37

Case

4 specs
Diameter
39mm
39.5mm
Thickness
12.55mm
12.3mm
Lug-to-Lug
n/a
47.2mm
Lug Width
n/a
20mm

Crystal & Dial

4 specs
Crystal Shape
n/a
Box
AR Coating
n/a
Anti-reflective coating on inner surface
Dial Color
Blue
n/a
Lume
C3 Super-LumiNova applied to indices and hands for low-light readability.
LumiBrite on hands, index(es) and bezel

Movement

3 specs
Caliber
Miyota 9039
Seiko 6L37
Power Reserve
42h
45h
Jewels
0
26

Pricing

1 specs
MSRP
$345
$2,800
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Reviews

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

Beaufort Seatrekker

The Beaufort Seatrekker is praised for its sharp case, intriguing dégradé dial, and good value around €600. One owner found the included TPU strap fit problematic, noting that an optional steel bracelet significantly improved wearability and perceived quality. The watch ran at +5-10 seconds per day during testing. On balance, owners and reviewers rate the Beaufort Seatrekker highly for its case finishing and dial design at its price point.

From video reviewers

The case finishing is a strength. The lume brightness was not agreed upon.

Seiko Prospex Marinemaster Marinemaster 1965 Diver’s Modern Re-interpretation

The Seiko Prospex Marinemaster Marinemaster 1965 Diver’s Modern Re-interpretation is noted for its slim 12.3mm case and 39.5mm diameter, making it a wearable dive watch. The automatic Seiko 6L37 movement is described as having a 45-46 hour power reserve, with one reviewer noting an accuracy of -10/+15 seconds per day. The watch features a box-shaped sapphire crystal and 200 meters of water resistance. However, its price of A$4,650 is considered high for its specifications, and one reviewer questions Seiko's continued reliance on the 62MAS design. On balance, reviewers find the Seiko Prospex Marinemaster Marinemaster 1965 Diver’s Modern Re-interpretation to be a functional and refined dive watch, though its value proposition is debated due to its price point.

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