Aquastar Deepstar IIvsSeiko Prospex Marinemaster Marinemaster 1965 Diver’s Modern Re-interpretation

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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 Deepstar II at true scale

Deepstar II

Seiko Prospex Marinemaster Marinemaster 1965 Diver’s Modern Re-interpretation at true scale

Prospex Marinemaster Marinemaster 1965 Diver’s Modern Re-interpretation

Diameter

37mm

39.5mm

Lug-to-Lug

46mm

lowest

47.2mm

Thickness

12mm

lowest

12.3mm

Water Resistance

200m

200m

Power Reserve

n/a

45h

MSRP

n/a

$2,800

Movement

Sellita SW290-1

Seiko 6L37

Case

4 specs
Diameter
37mm
39.5mm
Thickness
12mm
12.3mm
Lug-to-Lug
46mm
47.2mm
Lug Width
37mm
20mm

Crystal & Dial

4 specs
Crystal Shape
n/a
Box
AR Coating
n/a
Anti-reflective coating on inner surface
Dial Color
White
n/a
Lume
None
LumiBrite on hands, index(es) and bezel

Movement

3 specs
Caliber
Sellita SW290-1
Seiko 6L37
Power Reserve
n/a
45h
Jewels
0
26

Pricing

1 specs
MSRP
n/a
$2,800
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Reviews

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

Aquastar Deepstar II

Owners widely praise the Aquastar Deepstar II for its comfortable 37mm wearability, vintage aesthetic, and excellent value. Reviewers and owners alike highlight its smooth-winding Sellita SW290-1 movement, remarkable timekeeping, and legible dial with excellent lume. The updated beads-of-rice bracelet with a diver extension is considered a worthwhile upgrade, and the included grey tropic strap is notably supple. Some owners, however, find the 37mm case diameter too small, despite the 47mm lug-to-lug contributing to a larger perceived wrist presence. One owner dislikes the small seconds subdial, finding it interrupts the dial's aesthetic. Overall, owners and reviewers rate the Aquastar Deepstar II highly for its vintage charm, comfortable wearability, and strong value proposition.

From video reviewers

The vintage design and 37mm case size are praised. The price point is considered a strong point by one reviewer, while another suggests it may limit its appeal.

Seiko Prospex Marinemaster Marinemaster 1965 Diver’s Modern Re-interpretation

The Seiko Prospex Marinemaster Marinemaster 1965 Diver’s Modern Re-interpretation is noted for its slim 12.3mm case and 39.5mm diameter, making it a wearable dive watch. The automatic Seiko 6L37 movement is described as having a 45-46 hour power reserve, with one reviewer noting an accuracy of -10/+15 seconds per day. The watch features a box-shaped sapphire crystal and 200 meters of water resistance. However, its price of A$4,650 is considered high for its specifications, and one reviewer questions Seiko's continued reliance on the 62MAS design. On balance, reviewers find the Seiko Prospex Marinemaster Marinemaster 1965 Diver’s Modern Re-interpretation to be a functional and refined dive watch, though its value proposition is debated due to its price point.

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