Which is cheaper, the Beaufort Aerotimer or the Sheffield 1A 40mm?

At MSRP the Sheffield 1A 40mm is the cheaper of the two at $228, against $599 for the Beaufort Aerotimer — a $371 gap before any retailer discounting.

Which has better water resistance, the Beaufort Aerotimer or the Sheffield 1A 40mm?

The Sheffield 1A 40mm is rated to 200m versus 100m for the Beaufort Aerotimer.

Which has a longer power reserve, the Beaufort Aerotimer or the Sheffield 1A 40mm?

The Beaufort Aerotimer carries a 42-hour power reserve against 40 hours on the Sheffield 1A 40mm.

What movement does the Beaufort Aerotimer run compared to the Sheffield 1A 40mm?

Both watches run automatic movements — the Beaufort Aerotimer uses the STP 1-11 and the Sheffield 1A 40mm uses the Seiko NH35.

Side by side

Beaufort AerotimervsSheffield 1A 40mm

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

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Beaufort Aerotimer

aerotimer-navygilt

MSRP $599

Sheffield 1A 40mm

allsport-1-auto

MSRP $228

At a glance

9 of 29 specs differ

Diameter

Aerotimer40mm

1A 40mm40mm

Power Reserve

Aerotimer42h

1A 40mm40h

Water Resistance

Aerotimer100m

1A 40mm200m

MSRP

Aerotimer$599

1A 40mm$228

Full specifications

Case

4 specs

Thickness

11.45mm

13mm

Lug-to-Lug

48.5mm

48mm

Lug Width

22mm

20mm

Water Resistance

100m

200m

Crystal & Dial

2 specs

Dial Color

Navy

—

Lume

C1 Super-LumiNova applied to 3hr, 6hr, 9hr, and 12hr indices and hands for low-l

None

Movement

2 specs

Caliber

STP 1-11

Seiko NH35

Power Reserve

42h

40h

Pricing

1 specs

MSRP

$599

$228

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Beaufort AerotimervsSheffield 1A 40mm

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