Luminox Master Carbon SEAL Automatic 45mmvsSeiko Prospex Sea The Black Series

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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.

Master Carbon SEAL Automatic 45mm

Prospex Sea The Black Series
Diameter
45mm
45mm
Lug-to-Lug
n/a
47.7mm
Thickness
14mm
13.2mm
lowest
Water Resistance
200m
200m
Power Reserve
n/a
41h
MSRP
$1,695
$765
lowest
Movement
Sellita SW220-1
Seiko 4R36
Case
4 specsCrystal & Dial
3 specsMovement
3 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
Owners widely praise the Luminox Master Carbon SEAL Automatic 45mm for its lightweight and scratch-resistant Carbonox case, which has held up well to extreme activities, and appreciate the constant lume from its tritium tubes. However, some owners report issues with the bezel rattling and have observed multiple instances of sheared lugs on the watch. One reviewer noted the rubber strap requires precise cutting and the deployant hardware is mismatched. The Luminox Master Carbon SEAL Automatic 45mm is available on a red strap, with a black strap also offered. On balance, owners value the Luminox Master Carbon SEAL Automatic 45mm for its durable, lightweight carbon case and reliable tritium lume, despite some concerns about build quality and strap design.
The Seiko Prospex Sea The Black Series is praised for its distinct green sunburst dial and bezel, classic diver's dial layout, and excellent legibility with Seiko's strong lume. Owners note that the price is often discounted from the RRP, making it an excellent first proper watch. A reviewer notes a lost opportunity for a thinner appearance due to the bezel's design. On balance, owners and reviewers rate the Seiko Prospex Sea The Black Series highly for its legibility and distinctive dial at the price.
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