Serket Watch Co Reef MarianavsSheffield 1A

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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.

Serket Watch Co Reef Mariana at true scale

Reef Mariana

Sheffield 1A at true scale

1A

Diameter

40mm

40mm

Lug-to-Lug

47.5mm

46mm

lowest

Thickness

13.2mm

12.8mm

lowest

Water Resistance

200m

200m

MSRP

$449

$238

lowest

Movement

Seiko NH35

Seiko NH35

Case

2 specs
Thickness
13.2mm
12.8mm
Lug-to-Lug
47.5mm
46mm

Crystal & Dial

2 specs
Dial Color
Orange
White/Blue
Lume
BGW9
Swiss blue lume

Pricing

1 specs
MSRP
$449
$238
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Reviews

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

Serket Watch Co Reef Mariana

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.

Sheffield 1A

Sheffield 1A owners praise its superb quality, sturdiness, and value, noting it feels more substantial than a Seiko 5. The blue dial is highlighted as a positive feature. One owner flagged expensive shipping fees as a drawback, and another suggested the bezel action could be crisper. Overall, owners consider the Sheffield 1A a no-brainer for its affordability and quality.