Seaholm OffshorevsSeiko Prospex Sea 1968 Heritage Diver's GMT

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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.

Seaholm Offshore at true scale

Offshore

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

Prospex Sea 1968 Heritage Diver's GMT

Diameter

41mm

42mm

Lug-to-Lug

n/a

48.6mm

Thickness

n/a

12.9mm

Water Resistance

200m

200m

Power Reserve

38h

72h

highest

MSRP

$825

lowest

$1,500

Movement

Sellita SW200-1

Seiko 6R54

Case

4 specs
Diameter
41mm
42mm
Thickness
n/a
12.9mm
Lug-to-Lug
n/a
48.6mm
Lug Width
21mm
20mm

Crystal & Dial

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

Movement

3 specs
Caliber
Sellita SW200-1
Seiko 6R54
Power Reserve
38h
72h
Jewels
0
24

Pricing

1 specs
MSRP
$825
$1,500
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Reviews

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

Seaholm Offshore

Owners widely praise the Seaholm Offshore for its execution, noting attention to detail on the brushed dial, a classic no-crown-guard aesthetic, and a beautiful dial color. The domed crystal and solid, quality feel are also frequently highlighted, with one owner finding it a great value. The bracelet's simple screw-link sizing is a practical plus. Seaholm Offshore watches are built to meet ISO 6425 water resistance specifications and offer significant shock and magnetism protection through proprietary components. Overall, owners rate the Seaholm Offshore highly for its detailed finishing and quality feel at its price point.

Seiko Prospex Sea 1968 Heritage Diver's GMT

The Seiko Prospex Sea 1968 Heritage Diver's GMT is widely praised for its build quality, finishing, and value, with owners noting its comfortable wearability and attractive aesthetic, particularly the silver/white sunray dial and blue ceramic bezel. The improved bracelet clasp with excellent micro-adjustment is a recurring positive point. Some owners report accuracy figures of +3 seconds per day or +/- 5 seconds per day, exceeding the movement's stated range. However, the GMT functionality is considered secondary to its dive watch capabilities by some, with the GMT scale being difficult to read and the caller-style GMT movement being a drawback for certain users. The dial contrast is also noted as lacking by some, and the crown at 4 o'clock is undesirable for a few. On balance, owners and reviewers rate the Seiko Prospex Sea 1968 Heritage Diver's GMT highly for its blend of dive watch character and GMT functionality, offering significant features for its price.

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