Seiko Prospex Sea 1968 Heritage Diver's GMTvsTimefactors Voyager 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.

Prospex Sea 1968 Heritage Diver's GMT

Voyager GMT
Diameter
42mm
42.5mm
Lug-to-Lug
48.6mm
lowest
52mm
Thickness
12.9mm
lowest
14.5mm
Water Resistance
200m
300m
highest
Power Reserve
72h
n/a
MSRP
$1,500
$1,174
lowest
Movement
Seiko 6R54
ETA 2893-2
Case
5 specsCrystal & Dial
3 specsMovement
3 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
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.
Owners widely praise the Timefactors Voyager GMT for its vintage dial design and jubilee-style bracelet. One owner notes the 42.5mm case, despite a 15mm thickness, is surprisingly wearable on a 6.75-inch wrist. Accuracy is reported as perfect by one owner. However, some find the 15mm thickness excessive for their wrists, and one commenter considers the lack of a date window a deal-breaker. Overall, owners rate the Timefactors Voyager GMT highly for its vintage aesthetic and bracelet, with wearability being a point of discussion due to its thickness.
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