Serket Watch Co Reef MarianavsSheffield 1A SCR II Blue
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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.

Reef Mariana

1A SCR II Blue
Diameter
40mm
40mm
Lug-to-Lug
47.5mm
lowest
48mm
Thickness
13.2mm
13mm
lowest
Water Resistance
200m
200m
MSRP
$449
$278
lowest
Movement
Seiko NH35
Seiko NH35
Case
2 specsCrystal & Dial
2 specsMovement
1 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
Owners widely praise the Serket Watch Co Reef Mariana for its excellent value, citing the sapphire crystal, ceramic bezel, and reliable Seiko NH35 automatic movement at its price point. Some owners note the bezel turns too easily and suggest the lume could be stronger. Overall, owners rate the Serket Watch Co Reef Mariana highly for its eye-catching dial and bezel combination and strong feature set for the price.
Owners widely praise the Sheffield 1A SCR II Blue for its excellent finishing and vibrant blue dial, with one owner highlighting the fantastic lume and domed crystal as standout features. The watch is considered a great value, offering quality comparable to higher-priced alternatives. One owner notes the bezel action could be crisper. Overall, owners rate the Sheffield 1A SCR II Blue highly for its impressive finishing and dial quality at an affordable price.
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