Alsta SuperautomaticvsSeiko Prospex Sea PADI Automatic Diver's
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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.

Superautomatic

Prospex Sea PADI Automatic Diver's
Diameter
38mm
43.8mm
Lug-to-Lug
43mm
n/a
Thickness
13.2mm
12.8mm
lowest
Water Resistance
300m
highest
200m
Power Reserve
38h
n/a
MSRP
$1,435
n/a
Movement
Sellita SW200-1
Seiko 4R35
Case
6 specsCrystal & Dial
3 specsMovement
4 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
The Alsta Superautomatic is praised for its excellent retro 70s dive watch design and connection to the movie Jaws, with reviewers noting its contrasting case finishes and comfortable Tropic strap. Owners are split on its value, with some finding it egregiously overpriced at MSRP but a fun summer piece around $500-600, while others acknowledge collector hesitation due to the Sellita SW200-1 movement. The bracelet's execution is criticized for poor detailing and less crisp machining, and the bezel lacks lume. On balance, owners and reviewers appreciate the Alsta Superautomatic for its vintage-inspired design and Jaws movie connection, despite some reservations about its price and bracelet finishing.
The Alsta Superautomatic offers excellent value for its price point. Reviewers noted that the lume is on par with Seiko.
Owners widely praise the Seiko Prospex Sea PADI Automatic Diver's SRPB99 for its excellent value and refined wave dial pattern, with one reviewer noting its sharp, angular 43.8mm case wears smaller than its dimensions suggest. The 4R35 movement hacks and handwinds, and the watch keeps great time. Some owners find the 43.8mm case a bit large, though others report the short, steeply angled lugs enhance wearability. The entry-level stainless steel bracelet is considered good but not exceptional, and one owner found it difficult to resize. The dial's blue offers depth and reflectivity, though the red hash marks are seen as a drawback by one owner. Overall, owners rate the Seiko Prospex Sea PADI Automatic Diver's SRPB99 highly for its outstanding value and refined dial.
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