Aquastar Benthos HeritagevsSeiko Prospex Sea Save the Ocean Special 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.

Aquastar Benthos Heritage at true scale

Benthos Heritage

Seiko Prospex Sea Save the Ocean Special Edition at true scale

Prospex Sea Save the Ocean Special Edition

Diameter

42mm

45mm

Lug-to-Lug

47mm

lowest

47.7mm

Thickness

n/a

13.2mm

Water Resistance

500m

highest

200m

Power Reserve

n/a

41h

MSRP

n/a

$625

Movement

Sellita SW200-1

Seiko 4R36

Case

5 specs
Diameter
42mm
45mm
Thickness
n/a
13.2mm
Lug-to-Lug
47mm
47.7mm
Lug Width
n/a
22mm
Water Resistance
500m
200m

Crystal & Dial

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

Movement

3 specs
Caliber
Sellita SW200-1
Seiko 4R36
Power Reserve
n/a
41h
Jewels
0
24

Pricing

1 specs
MSRP
n/a
$625
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Reviews

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

Aquastar Benthos Heritage

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.

Seiko Prospex Sea Save the Ocean Special Edition

The Seiko Prospex Sea Save the Ocean Special Edition is widely praised for its exceptional and unique dial designs, often described as a highlight with wave patterns, lagoon hues, or even manta rays, offering a "Grand Seiko feel" at a regular Seiko price. Owners and reviewers consistently note the attractive color combinations and textured appearances, making it a standout feature. The watch is generally considered solidly built and good value, with satisfactory lume and smooth bezel operation. However, the bracelet and clasp are frequently criticized as underwhelming, rattly, and lacking a convenient diver's extension, a common complaint across several Seiko models. Some owners also express a desire for exhibition casebacks or note potential quality control issues such as misaligned bezels or day/date wheels. Overall, owners and reviewers rate the Seiko Prospex Sea Save the Ocean Special Edition highly for its visually striking and unique dial designs at an accessible price point.

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