Chronotechna SeaQuest DivevsSeiko 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.

Chronotechna SeaQuest Dive at true scale

SeaQuest Dive

Seiko Prospex Sea Save the Ocean Special Edition at true scale

Prospex Sea Save the Ocean Special Edition

Diameter

42mm

43.8mm

Lug-to-Lug

47.7mm

lowest

48.7mm

Thickness

12.4mm

lowest

12.8mm

Water Resistance

300m

highest

200m

Power Reserve

41h

41h

MSRP

n/a

$650

Movement

Sellita SW200-1

Seiko 4R35

Case

4 specs
Diameter
42mm
43.8mm
Thickness
12.36mm
12.8mm
Lug-to-Lug
47.67mm
48.7mm
Water Resistance
300m
200m

Crystal & Dial

3 specs
AR Coating
n/a
Anti-reflective coating on inner surface
Dial Color
Black
n/a
Lume
SLN Dark Grey X1 Grade
LumiBrite on hands, index(es) and bezel

Movement

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

Pricing

1 specs
MSRP
n/a
$650
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Reviews

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

Chronotechna SeaQuest Dive

The Chronotechna SeaQuest Dive is commended for its distinctive "blackest black" dial, achieved with Musou paint for striking contrast, and its minimalist design that sidesteps common diver watch clichés. The watch is equipped with a Sellita SW200-1 automatic movement, a 42mm steel case featuring both brushed and polished finishes, a unidirectional ceramic bezel, and 300m water resistance. However, one owner notes that the cut-out edges of the sandwich dial appear rough, suggesting potential quality control issues with dial finishing. Overall, owners and reviewers appreciate the Chronotechna SeaQuest Dive for its unique dial and design, despite some concerns about dial finishing.

Seiko Prospex Sea Save the Ocean Special Edition

The Seiko Prospex Sea Save the Ocean Special Edition is widely praised for its exceptional and beautiful dial designs, featuring wave patterns, gradient blues, and marine animal motifs that evoke the ocean, with many considering them among the best in their price range. Owners also note satisfactory lume, smooth bezel operation, and comfortable wearability, with some finding the 43.8mm case size and 13mm thickness to be well-balanced for daily wear. However, multiple sources criticize the bracelet clasp as flimsy, rattly, or underwhelming, and one owner reported returning the watch due to this. Some owners also note imperfect day/date wheel alignment as a common issue in this price segment. On balance, owners and reviewers rate the Seiko Prospex Sea Save the Ocean Special Edition highly for its stunning dial artistry and overall value.