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.

Alsta Superautomatic at true scale

Superautomatic

Seiko Prospex Sea PADI Automatic Diver's at true scale

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 specs
Diameter
38mm
43.8mm
Thickness
13.2mm
12.8mm
Lug-to-Lug
43mm
n/a
Lug Width
20mm
22mm
Water Resistance
300m
200m
Caseback
n/a
Screw-back

Crystal & Dial

3 specs
Crystal
Sapphire
n/a
Texture
n/a
Wave-pattern textured
Lume
Super-LumiNova
LumiBrite on hands and indices

Movement

4 specs
Caliber
Sellita SW200-1
Seiko 4R35
Power Reserve
38h
Approx. 41 hoursh
Jewels
0
23
Complications
None
Date, Stop-seconds function

Pricing

1 specs
MSRP
$1,435
n/a
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Reviews

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

Alsta Superautomatic

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.

From video reviewers

The Alsta Superautomatic offers excellent value for its price point. Reviewers noted that the lume is on par with Seiko.

Seiko Prospex Sea PADI Automatic Diver's

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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