Which is cheaper, the Sheffield 1A or the Seiko Prospex Marinemaster Marinemaster 1965 Heritage Diver's Watch?

At MSRP the Sheffield 1A is the cheaper of the two at $223, against $2,800 for the Seiko Prospex Marinemaster Marinemaster 1965 Heritage Diver's Watch — a $2,577 gap before any retailer discounting.

Which is bigger, the Sheffield 1A or the Seiko Prospex Marinemaster Marinemaster 1965 Heritage Diver's Watch?

The Sheffield 1A wears larger at 40mm versus 39.5mm for the Seiko Prospex Marinemaster Marinemaster 1965 Heritage Diver's Watch — a 0.5mm difference across the dial.

What movement does the Sheffield 1A run compared to the Seiko Prospex Marinemaster Marinemaster 1965 Heritage Diver's Watch?

Both watches run automatic movements — the Sheffield 1A uses the Seiko NH35A and the Seiko Prospex Marinemaster Marinemaster 1965 Heritage Diver's Watch uses the 6L37.

Side by side

Sheffield 1AvsSeiko Prospex Marinemaster Marinemaster 1965 Heritage Diver's Watch

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 Prospex Marinemaster Marinemaster 1965 Heritage Diver's Watch

sje117j1

MSRP $2,800

At a glance

11 of 29 specs differ

Diameter

1A40mm

Prospex Marinemaster Marinemaster 1965 Heritage Diver's Watch39.5mm

Power Reserve

1A—

Prospex Marinemaster Marinemaster 1965 Heritage Diver's Watch45h

Water Resistance

1A200m

Prospex Marinemaster Marinemaster 1965 Heritage Diver's Watch200m

MSRP

1A$223

Prospex Marinemaster Marinemaster 1965 Heritage Diver's Watch$2,800

Full specifications

Case

3 specs

Diameter

40mm

39.5mm

Thickness

12.8mm

12.3mm

Lug-to-Lug

46mm

47.2mm

Crystal & Dial

4 specs

Crystal Shape

Flat

Box

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

6L37

Power Reserve

—

45h

Jewels

Pricing

1 specs

MSRP

$223

$2,800

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Sheffield 1AvsSeiko Prospex Marinemaster Marinemaster 1965 Heritage Diver's Watch

At a glance

Full specifications

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