Which is cheaper, the Breitling Superocean Heritage B31 Automatic or the Seiko Prospex Marinemaster Marinemaster 1968 Heritage Diver's Watch?

At MSRP the Seiko Prospex Marinemaster Marinemaster 1968 Heritage Diver's Watch is the cheaper of the two at $2,900, against $6,500 for the Breitling Superocean Heritage B31 Automatic — a $3,600 gap before any retailer discounting.

Which is bigger, the Breitling Superocean Heritage B31 Automatic or the Seiko Prospex Marinemaster Marinemaster 1968 Heritage Diver's Watch?

The Seiko Prospex Marinemaster Marinemaster 1968 Heritage Diver's Watch wears larger at 42.6mm versus 42mm for the Breitling Superocean Heritage B31 Automatic — a 0.6mm difference across the dial.

Which has better water resistance, the Breitling Superocean Heritage B31 Automatic or the Seiko Prospex Marinemaster Marinemaster 1968 Heritage Diver's Watch?

The Seiko Prospex Marinemaster Marinemaster 1968 Heritage Diver's Watch is rated to 300m versus 200m for the Breitling Superocean Heritage B31 Automatic.

Which has a longer power reserve, the Breitling Superocean Heritage B31 Automatic or the Seiko Prospex Marinemaster Marinemaster 1968 Heritage Diver's Watch?

The Breitling Superocean Heritage B31 Automatic carries a 78-hour power reserve against 50 hours on the Seiko Prospex Marinemaster Marinemaster 1968 Heritage Diver's Watch.

What movement does the Breitling Superocean Heritage B31 Automatic run compared to the Seiko Prospex Marinemaster Marinemaster 1968 Heritage Diver's Watch?

Both watches run automatic movements — the Breitling Superocean Heritage B31 Automatic uses the Breitling B31 (Manufacture Breitling & AMT) and the Seiko Prospex Marinemaster Marinemaster 1968 Heritage Diver's Watch uses the 8L35.

Side by side

Breitling Superocean Heritage B31 AutomaticvsSeiko Prospex Marinemaster Marinemaster 1968 Heritage Diver's Watch

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

Add a watch

Breitling Superocean Heritage B31 Automatic

AB3111361L1S1

MSRP $6,500

Seiko Prospex Marinemaster Marinemaster 1968 Heritage Diver's Watch

sla077j1

MSRP $2,900

At a glance

16 of 29 specs differ

Diameter

Superocean Heritage B31 Automatic42mm

Prospex Marinemaster Marinemaster 1968 Heritage Diver's Watch42.6mm

Power Reserve

Superocean Heritage B31 Automatic78h

Prospex Marinemaster Marinemaster 1968 Heritage Diver's Watch50h

Water Resistance

Superocean Heritage B31 Automatic200m

Prospex Marinemaster Marinemaster 1968 Heritage Diver's Watch300m

MSRP

Superocean Heritage B31 Automatic$6,500

Prospex Marinemaster Marinemaster 1968 Heritage Diver's Watch$2,900

Full specifications

Case

6 specs

Diameter

42mm

42.6mm

Thickness

12.03mm

13.4mm

Lug-to-Lug

—

49.3mm

Finish

Stainless steel

Brushed and polished

Water Resistance

200m

300m

Caseback

—

Solid

Crystal & Dial

5 specs

Crystal Shape

—

Curved

AR Coating

—

Anti-reflective coating on inner surface

Dial Color

—

Black

Indices

—

Applied

Lume

None

LumiBrite on hands, index(es) and bezel

Movement

4 specs

Caliber

Breitling B31 (Manufacture Breitling & AMT)

8L35

Beat Rate

0 vph

28,800 vph

Power Reserve

78h

50h

Jewels

Pricing

1 specs

MSRP

$6,500

$2,900

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Breitling Superocean Heritage B31 AutomaticvsSeiko Prospex Marinemaster Marinemaster 1968 Heritage Diver's Watch

At a glance

Full specifications

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