Which is cheaper, the Sheffield Deep Gray 300 or the Signum Siege?

At MSRP the Sheffield Deep Gray 300 is the cheaper of the two at $258, against $539 for the Signum Siege — a $281 gap before any retailer discounting.

Which is bigger, the Sheffield Deep Gray 300 or the Signum Siege?

The Sheffield Deep Gray 300 wears larger at 42mm versus 40mm for the Signum Siege — a 2mm difference across the dial.

Which has better water resistance, the Sheffield Deep Gray 300 or the Signum Siege?

The Sheffield Deep Gray 300 is rated to 300m versus 100m for the Signum Siege.

What movement does the Sheffield Deep Gray 300 run compared to the Signum Siege?

Both watches run automatic movements — the Sheffield Deep Gray 300 uses the Seiko NH35 and the Signum Siege uses the Miyota 9015.

Side by side

Sheffield Deep Gray 300vsSignum Siege

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

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Sheffield Deep Gray 300

deep-gray-300

MSRP $258

Signum Siege

signum-siege

MSRP $539

At a glance

9 of 29 specs differ

Diameter

Deep Gray 30042mm

Siege40mm

Power Reserve

Deep Gray 30040h

Siege—

Water Resistance

Deep Gray 300300m

Siege100m

MSRP

Deep Gray 300$258

Siege$539

Full specifications

Case

5 specs

Diameter

42mm

40mm

Thickness

13.8mm

10.5mm

Lug-to-Lug

52mm

48mm

Lug Width

22mm

20mm

Water Resistance

300m

100m

Crystal & Dial

1 specs

Lume

None

BGW9 Blue SuperLuminova

Movement

2 specs

Caliber

Seiko NH35

Miyota 9015

Power Reserve

40h

—

Pricing

1 specs

MSRP

—

$539

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Sheffield Deep Gray 300vsSignum Siege

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