Seiko Prospex Sea 1965 Heritage Diver's WatchvsTrematic T-Five Beigua Maris

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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 Sea 1965 Heritage Diver's Watch at true scale

Prospex Sea 1965 Heritage Diver's Watch

Trematic T-Five Beigua Maris at true scale

T-Five Beigua Maris

Diameter

40mm

40mm

Lug-to-Lug

46.4mm

n/a

Thickness

13mm

n/a

Water Resistance

300m

300m

Power Reserve

72h

n/a

MSRP

$1,300

$1,165

lowest

Movement

Seiko 6R55

La Joux-Perret G101

Case

4 specs
Category
Diver
n/a
Thickness
13mm
n/a
Lug-to-Lug
46.4mm
n/a
Lug Width
20mm
n/a

Crystal & Dial

4 specs
Crystal Shape
Curved
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 6R55
La Joux-Perret G101
Power Reserve
72h
0h
Jewels
24
0

Pricing

1 specs
MSRP
$1,300
$1,165
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Reviews

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

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.

Trematic T-Five Beigua Maris

The Trematic T-Five Beigua Maris is lauded for its 40mm grade 5 titanium case with mixed finishes and a smooth 120-click bezel action. Reviewers highlight its attractive specifications for the price, including the La Joux-Perret G101 automatic movement, and note its well-proportioned 40mm diameter. One owner reported excellent customer service, receiving a replacement watch within a week. However, the Lumicast hour markers' glow duration and brightness are slightly below expectations, and the minute track's design can hinder precise legibility. Overall, owners and reviewers rate the Trematic T-Five Beigua Maris highly for its value and build quality, particularly the titanium case and reliable movement.

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