Which is cheaper, the Sheffield 1A SCR II Blue or the Sinn U18?

At MSRP the Sheffield 1A SCR II Blue is the cheaper of the two at $278, against $3,488 for the Sinn U18 — a $3,210 gap before any retailer discounting.

Which is bigger, the Sheffield 1A SCR II Blue or the Sinn U18?

The Sinn U18 wears larger at 44mm versus 40mm for the Sheffield 1A SCR II Blue — a 4mm difference across the dial.

Which has better water resistance, the Sheffield 1A SCR II Blue or the Sinn U18?

The Sinn U18 is rated to 2000m versus 200m for the Sheffield 1A SCR II Blue.

Which has a longer power reserve, the Sheffield 1A SCR II Blue or the Sinn U18?

The Sinn U18 carries a 42-hour power reserve against 40 hours on the Sheffield 1A SCR II Blue.

What movement does the Sheffield 1A SCR II Blue run compared to the Sinn U18?

Both watches run automatic movements — the Sheffield 1A SCR II Blue uses the Seiko NH35 and the Sinn U18 uses the SW300-1.

Side by side

Sheffield 1A SCR II BluevsSinn U18

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

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Sheffield 1A SCR II Blue

1a-scr-ii-blue

MSRP $278

Sinn U18

U18

MSRP $3,488

At a glance

16 of 29 specs differ

Diameter

1A SCR II Blue40mm

U1844mm

Power Reserve

1A SCR II Blue40h

U1842h

Water Resistance

1A SCR II Blue200m

U182,000m

MSRP

1A SCR II Blue$278

U18$3,488

Full specifications

Case

9 specs

Crystal & Dial

4 specs

Crystal Shape

Flat

—

AR Coating

Inner

—

Dial Color

Blue

Black

Indices

Applied

—

Movement

2 specs

Caliber

Seiko NH35

SW300-1

Power Reserve

40h

42h

Pricing

1 specs

MSRP

—

$3,488

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Sheffield 1A SCR II BluevsSinn U18

At a glance

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