Which is cheaper, the Serket Watch Co Reef or the Sheffield 1A?

At MSRP the Sheffield 1A is the cheaper of the two at $223, against $899 for the Serket Watch Co Reef — a $676 gap before any retailer discounting.

Which is bigger, the Serket Watch Co Reef or the Sheffield 1A?

The Serket Watch Co Reef wears larger at 46mm versus 40mm for the Sheffield 1A — a 6mm difference across the dial.

Which has better water resistance, the Serket Watch Co Reef or the Sheffield 1A?

The Serket Watch Co Reef is rated to 300m versus 200m for the Sheffield 1A.

What movement does the Serket Watch Co Reef run compared to the Sheffield 1A?

Both watches run automatic movements — the Serket Watch Co Reef uses the Sellita SW200-1 and the Sheffield 1A uses the Seiko NH35A.

Side by side

Serket Watch Co ReefvsSheffield 1A

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

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Serket Watch Co Reef

MSRP $899

Sheffield 1A

diver-1a-40mm-white

MSRP $223

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Buy used on eBay ↗

Buy from Sheffield ↗

Buy used on eBay ↗

At a glance

11 of 29 specs differ

Diameter

Reef46mm

1A40mm

Power Reserve

Reef38h

1A—

Water Resistance

Reef300m

1A200m

MSRP

Reef$899

1A$223

Full specifications

Case

6 specs

Crystal & Dial

2 specs

Dial Color

Black

White/Blue

Lume

None

Swiss blue lume

Movement

2 specs

Caliber

Sellita SW200-1

Seiko NH35A

Power Reserve

38h

—

Pricing

1 specs

MSRP

$899

$223

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Serket Watch Co ReefvsSheffield 1A

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