Aquastar Benthos HeritagevsSeiko Prospex Sea

lug2lug doesn't sell watches. Buy links open the brand's or seller's own site. Some links are affiliate links: lug2lug may earn a commission at no extra cost to you. Disclosures

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 at true scale

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 specs
Diameter
42mm
41.7mm
Thickness
n/a
12.3mm
Lug-to-Lug
47mm
49.5mm
Lug Width
n/a
20mm
Water Resistance
500m
200m

Crystal & Dial

3 specs
Crystal
Sapphire
Hardlex
Dial Color
Blue
n/a
Lume
None
LumiBrite on hands, index(es) and bezel

Movement

3 specs
Caliber
Sellita SW200-1
Seiko 4R35
Power Reserve
n/a
41h
Jewels
0
23

Pricing

1 specs
MSRP
n/a
$595
Keep your wishlist and collection together in the appExplore the app

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

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.