Balticus Watches Deep WatervsSeiko Prospex Sea 1968 Heritage Diver's GMT 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.

Balticus Watches Deep Water at true scale

Deep Water

Seiko Prospex Sea 1968 Heritage Diver's GMT Limited Edition at true scale

Prospex Sea 1968 Heritage Diver's GMT Limited Edition

Diameter

42mm

42mm

Lug-to-Lug

n/a

48.6mm

Thickness

n/a

13.3mm

Water Resistance

300m

300m

Power Reserve

42h

72h

highest

MSRP

$1,011

lowest

$1,750

Movement

Miyota 9015

Seiko 6R54

Case

3 specs
Thickness
n/a
13.3mm
Lug-to-Lug
n/a
48.6mm
Lug Width
n/a
20mm

Crystal & Dial

2 specs
AR Coating
n/a
Anti-reflective coating on inner surface
Lume
None
LumiBrite on hands, index(es) and bezel

Movement

3 specs
Caliber
Miyota 9015
Seiko 6R54
Power Reserve
42h
72h
Jewels
0
24

Pricing

1 specs
MSRP
$1,011
$1,750
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Reviews

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

Balticus Watches Deep Water

Balticus Watches Balticus Deep Water is described as built like a tank with a non-tapered 22mm bracelet. It features a Damascus steel case and buckle with a wavy pattern, paired with a meteorite dial for a raw aesthetic. On balance, owners appreciate the Balticus Deep Water Stardust for its robust build and unique dial and case materials.

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.

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