Which is cheaper, the Sheffield 1A SCR II Blue or the Seiko 5KX?

At MSRP the Sheffield 1A SCR II Blue is the cheaper of the two at $278, against $350 for the Seiko 5KX — a $72 gap before any retailer discounting.

Which is bigger, the Sheffield 1A SCR II Blue or the Seiko 5KX?

The Seiko 5KX wears larger at 42.5mm versus 40mm for the Sheffield 1A SCR II Blue — a 2.5mm difference across the dial.

Which has better water resistance, the Sheffield 1A SCR II Blue or the Seiko 5KX?

The Sheffield 1A SCR II Blue is rated to 200m versus 10m for the Seiko 5KX.

Which has a longer power reserve, the Sheffield 1A SCR II Blue or the Seiko 5KX?

The Seiko 5KX carries a 41-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 Seiko 5KX?

Both watches run automatic movements — the Sheffield 1A SCR II Blue uses the Seiko NH35 and the Seiko 5KX uses the 4R36.

Side by side

Sheffield 1A SCR II BluevsSeiko 5KX

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

Add a watch

Sheffield 1A SCR II Blue

1a-scr-ii-blue

MSRP $278

Seiko 5KX

srpd51

MSRP $350

At a glance

13 of 29 specs differ

Diameter

1A SCR II Blue40mm

5KX42.5mm

Power Reserve

1A SCR II Blue40h

5KX41h

Water Resistance

1A SCR II Blue200m

5KX100m

MSRP

1A SCR II Blue$278

5KX$350

Full specifications

Case

6 specs

Crystal & Dial

3 specs

Crystal

Sapphire

Hardlex

Dial Color

Blue

Black

Lume

None

LumiBrite on hands and index(es)

Movement

3 specs

Caliber

Seiko NH35

4R36

Power Reserve

40h

41h

Jewels

Pricing

1 specs

MSRP

—

$350

Keep exploring

More watches worth a look

Matched to the watches above on size, movement, style and price — microbrands first. Open any one to dig in.

Filippo Loreti Watchesmicro

Joker

Follow this matchup

Get a note when Sheffield 1A SCR II Blue vs Seiko 5KX gets more votes, a community discussion, or a price drop. No account needed.

Adjacent matchups

People also compared

Comparisons nearby in the catalog — alternatives to the watches above paired against the matchup.

Sheffield 1A 40mmvsSeiko 5KX Sheffield 1A 38vsSeiko 5KX Sheffield 1A 38 dive 38mm, 3-hand date (rotating dive bezel, perforated rubber strap)vsSeiko 5KX Filippo Loreti Watches The Joker MadnessvsSeiko 5KX Spinnaker Golden EclipsevsSheffield 1A SCR II Blue Sheffield 1A SCR II BluevsSpinnaker Hull Commander

Edit this comparison Add another watch Explore more 39–44mm watches

Sheffield 1A SCR II BluevsSeiko 5KX

At a glance

Full specifications

More watches worth a look

The Joker Madness

Golden Eclipse

Aquadiver

Hull Commander

Barracuda

Jamanta

COURG: Zero-Hour

Caloura 300m

Follow this matchup

People also compared