Seiko Prospex Sea 1968 Heritage Diver's GMT Limited EditionvsYema YEMA x Alain Silberstein Limited Edition

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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 1968 Heritage Diver's GMT Limited Edition at true scale

Prospex Sea 1968 Heritage Diver's GMT Limited Edition

Yema YEMA x Alain Silberstein Limited Edition at true scale

YEMA x Alain Silberstein Limited Edition

Diameter

42mm

40mm

Lug-to-Lug

48.6mm

n/a

Thickness

13.3mm

11mm

lowest

Water Resistance

300m

highest

200m

Power Reserve

72h

n/a

MSRP

$1,750

lowest

$3,732

Movement

Seiko 6R54

Yema CMM.20

Case

5 specs
Diameter
42mm
40mm
Thickness
13.3mm
11mm
Lug-to-Lug
48.6mm
n/a
Material
Stainless Steel
Titanium (DLC coated)
Water Resistance
300m
200m

Crystal & Dial

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

Movement

3 specs
Caliber
Seiko 6R54
Yema CMM.20
Power Reserve
72h
0h
Jewels
24
0

Pricing

1 specs
MSRP
$1,750
$3,732
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Reviews

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

Seiko Prospex Sea 1968 Heritage Diver's GMT Limited Edition

The Seiko Prospex Sea 1968 Heritage Diver's GMT Watch Limited Edition is widely praised for its excellent quality and finishing for its price, with reviewers highlighting its beautiful case, bracelet, and Lumibrite lume. Owners appreciate the comfortable 42mm case size and the 4 o'clock crown position. The watch features a sapphire crystal and uses the in-house 6R54 automatic movement with a three-day power reserve. Some reviewers note that the GMT function is secondary and that the bezel clicks are quieter than expected. The 4:30 date window splits opinion among enthusiasts, and it is described as a "caller GMT" rather than a true "traveller GMT." Overall, owners and reviewers rate the Seiko Prospex Sea 1968 Heritage Diver's GMT Watch Limited Edition highly for its excellent value, quality finishing, and comfortable wearability.

YEMA x Alain Silberstein Limited Edition

The YEMA x Alain Silberstein Limited Edition is noted for its distinctive, avant-garde design by Alain Silberstein, featuring a 40mm black DLC-coated titanium case and a vibrant dial with colorful, geometric hands. It is powered by the Yema CMM.20 micro-rotor automatic movement, offering a 70-hour power reserve and rated accuracy of -3/+7 seconds per day. Some reviewers and owners find elements like the fish on the caseback and the polished Yema logo incongruous with the marine theme, and the $3,900 price is frequently cited as a significant negative, with opinions on its aesthetic ranging widely from "terrible" to "great." Overall, owners and reviewers are divided on the YEMA x Alain Silberstein Limited Edition, with the polarizing design and high price point being the primary drivers of opinion.

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