Which is cheaper, the Sheffield 1A 38 or the Seiko 5KX?

At MSRP the Sheffield 1A 38 is the cheaper of the two at $238, against $350 for the Seiko 5KX — a $112 gap before any retailer discounting.

Which is bigger, the Sheffield 1A 38 or the Seiko 5KX?

The Seiko 5KX wears larger at 42.5mm versus 38mm for the Sheffield 1A 38 — a 4.5mm difference across the dial.

Which has better water resistance, the Sheffield 1A 38 or the Seiko 5KX?

The Sheffield 1A 38 is rated to 200m versus 10m for the Seiko 5KX.

What movement does the Sheffield 1A 38 run compared to the Seiko 5KX?

Both watches run automatic movements — the Sheffield 1A 38 uses the Seiko NH35 and the Seiko 5KX uses the 4R36.

Side by side

Sheffield 1A 38vsSeiko 5KX

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

Add a watch

Sheffield 1A 38

1a-38-blue

MSRP $238

Seiko 5KX

srpd51

MSRP $350

At a glance

11 of 29 specs differ

Diameter

1A 3838mm

5KX42.5mm

Power Reserve

1A 38—

5KX41h

Water Resistance

1A 38200m

5KX100m

MSRP

1A 38$238

5KX$350

Full specifications

Case

4 specs

Diameter

38mm

42.5mm

Thickness

12.8mm

13.4mm

Lug Width

20mm

22mm

Water Resistance

200m

100m

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

—

41h

Jewels

Pricing

1 specs

MSRP

$238

$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.

Islander Islander Bayport Automatic Dive Watch with Blue Wave Dial #ISL-311

Islandermicro

Under $50

Follow this matchup

Get a note when Sheffield 1A 38 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 38 dive 38mm, 3-hand date (rotating dive bezel, perforated rubber strap)vsSeiko 5KX Sheffield 1AvsSeiko 5KX Sheffield 1A diver ~40mm 3-hand, Arabic numerals (12/3/6/9), no datevsSeiko 5KX Islander Bayport Automatic Dive Watch with Blue Wave Dial #ISL-311vsSeiko 5KX Spinnaker Golden EclipsevsSheffield 1A 38 Sheffield 1A 38vsSpinnaker Hull Commander

Edit this comparison Add another watch More diver comparisons Best Diver Watches Under $500 Explore more 37–44mm watches

Sheffield 1A 38vsSeiko 5KX

At a glance

Full specifications

More watches worth a look

Islander Bayport Automatic Dive Watch with Blue Wave Dial #ISL-311

Golden Eclipse

Swordfish 3

Hull Commander

The T Rex By Boldr X Nitecore

Jamanta

Fearless

Caloura 300m

Follow this matchup

People also compared