Which is cheaper, the Sheffield 1A or the Seiko 62MAS?

At MSRP the Sheffield 1A is the cheaper of the two at $223, against $1,200 for the Seiko 62MAS — a $977 gap before any retailer discounting.

Which is bigger, the Sheffield 1A or the Seiko 62MAS?

The Seiko 62MAS wears larger at 40.5mm versus 40mm for the Sheffield 1A — a 0.5mm difference across the dial.

What movement does the Sheffield 1A run compared to the Seiko 62MAS?

Both watches run automatic movements — the Sheffield 1A uses the Seiko NH35A and the Seiko 62MAS uses the 6R35.

Side by side

Sheffield 1AvsSeiko 62MAS

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

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Sheffield 1A

diver-1a-40mm-white

MSRP $223

Seiko 62MAS

spb143j1

MSRP $1,200

At a glance

11 of 29 specs differ

Diameter

1A40mm

62MAS40.5mm

Power Reserve

1A—

62MAS70h

Water Resistance

1A200m

62MAS200m

MSRP

1A$223

62MAS$1,200

Full specifications

Case

3 specs

Diameter

40mm

40.5mm

Thickness

12.8mm

13.2mm

Lug-to-Lug

46mm

47.6mm

Crystal & Dial

4 specs

Crystal Shape

Flat

Curved

AR Coating

Inner

Anti-reflective coating on inner surface

Dial Color

White/Blue

Black

Lume

Swiss blue lume

LumiBrite on hands, index(es) and bezel

Movement

3 specs

Caliber

Seiko NH35A

6R35

Power Reserve

—

70h

Jewels

Pricing

1 specs

MSRP

$223

$1,200

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Sheffield 1AvsSeiko 62MAS

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