Aquastar Benthos HeritagevsSeiko Prospex Sea
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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.

Benthos Heritage

Prospex Sea
Diameter
42mm
41.7mm
Lug-to-Lug
47mm
lowest
49.5mm
Thickness
n/a
12.3mm
Water Resistance
500m
highest
200m
Power Reserve
n/a
41h
MSRP
n/a
$595
Movement
Sellita SW200-1
Seiko 4R35
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.
Owners widely praise the Aquastar Benthos Heritage for its fantastic looks, vintage charm, and excellent lume on the dial and ceramic bezel. Reviewers note its robust build and comfortable wearability, with one owner highlighting the brilliant cushion case and sunburst finish. The 42mm case wears comfortably despite its heft, and the watch offers excellent legibility. However, some owners find its 16mm thickness excessive and a potential wearability issue, while others consider the 500m WR designation superfluous given its 200m rating. On balance, owners and reviewers rate the Aquastar Benthos Heritage highly for its vintage aesthetics and strong lume at a good price.
Owners widely report the Seiko Prospex Sea is a well-built watch at a fair price, with some finding its 41.7mm case size perfect while others with smaller wrists consider it big, thick, and heavy. Reviewers consistently praise the excellent lume and robust design. One owner notes the bezel action is smoother and more precise than some other Seiko divers. Overall, owners and reviewers rate the Seiko Prospex Sea highly for its value and proven design.
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