Which is cheaper, the Sheffield 1A 38 or the Signum Siege?

At MSRP the Sheffield 1A 38 is the cheaper of the two at $238, against $539 for the Signum Siege — a $301 gap before any retailer discounting.

Which is bigger, the Sheffield 1A 38 or the Signum Siege?

The Signum Siege wears larger at 40mm versus 38mm for the Sheffield 1A 38 — a 2mm difference across the dial.

Which has better water resistance, the Sheffield 1A 38 or the Signum Siege?

The Sheffield 1A 38 is rated to 200m versus 100m for the Signum Siege.

What movement does the Sheffield 1A 38 run compared to the Signum Siege?

Both watches run automatic movements — the Sheffield 1A 38 uses the Seiko NH35 and the Signum Siege uses the Miyota 9015.

Side by side

Sheffield 1A 38vsSignum Siege

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

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Sheffield 1A 38

1a-38-blue

MSRP $238

Signum Siege

signum-siege

MSRP $539

At a glance

9 of 29 specs differ

Diameter

1A 3838mm

Siege40mm

Power Reserve

1A 38—

Siege—

Water Resistance

1A 38200m

Siege100m

MSRP

1A 38$238

Siege$539

Full specifications

Case

5 specs

Crystal & Dial

2 specs

Dial Color

Blue

—

Lume

None

BGW9 Blue SuperLuminova

Movement

1 specs

Caliber

Seiko NH35

Miyota 9015

Pricing

1 specs

MSRP

$238

$539

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Sheffield 1A 38 dive 38mm, 3-hand date (rotating dive bezel, perforated rubber strap)vsSignum Siege Sheffield 1AvsSignum Siege Sheffield 1A diver ~40mm 3-hand, Arabic numerals (12/3/6/9), no datevsSignum Siege Islander Bayport Automatic Dive Watch with Blue Wave Dial #ISL-311vsSignum Siege Quasar StarlightvsSheffield 1A 38 Sheffield 1A 38vsUBIQ Dual

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Sheffield 1A 38vsSignum Siege

At a glance

Full specifications

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