Cronos Sub Diver 44mm No Date (L6009)vsSeiko 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.

Sub Diver 44mm No Date (L6009)

Prospex Sea Save the Ocean Special Edition
Diameter
44mm
45mm
Lug-to-Lug
51.9mm
47.7mm
lowest
Thickness
17.1mm
13.2mm
lowest
Water Resistance
2000m
highest
200m
Power Reserve
n/a
41h
MSRP
$298
lowest
$625
Movement
Seiko NH35
Seiko 4R36
Case
7 specsCrystal & Dial
3 specsMovement
5 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
Owners widely praise the Cronos Sub Diver 44mm No Date (L6009) for its exceptional value, with one owner noting its 2000m water resistance and BGW9 Superluminova lume as standout features. The watch is described as a "beast" due to its 44mm case and 17mm thickness, though some find it wears surprisingly well for its size and is versatile for everyday and business casual wear. Some owners report the substantial weight and lug-to-lug distance make it feel heavy on the wrist, with one individual replacing the bracelet to reduce its overall weight. Overall, owners rate the Cronos Sub Diver 44mm No Date (L6009) highly for its impressive water resistance and value, despite its considerable heft.
The Seiko Prospex Sea Save the Ocean Special Edition is widely praised for its exceptional and unique dial designs, often described as a highlight with wave patterns, lagoon hues, or even manta rays, offering a "Grand Seiko feel" at a regular Seiko price. Owners and reviewers consistently note the attractive color combinations and textured appearances, making it a standout feature. The watch is generally considered solidly built and good value, with satisfactory lume and smooth bezel operation. However, the bracelet and clasp are frequently criticized as underwhelming, rattly, and lacking a convenient diver's extension, a common complaint across several Seiko models. Some owners also express a desire for exhibition casebacks or note potential quality control issues such as misaligned bezels or day/date wheels. Overall, owners and reviewers rate the Seiko Prospex Sea Save the Ocean Special Edition highly for its visually striking and unique dial designs at an accessible price point.
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