Which is cheaper, the Smith & Bradley Atlantis Blackfish Auto or the Seiko Prospex Marinemaster Marinemaster 1968 Heritage Diver's Watch?

At MSRP the Smith & Bradley Atlantis Blackfish Auto is the cheaper of the two at $889, against $3,600 for the Seiko Prospex Marinemaster Marinemaster 1968 Heritage Diver's Watch — a $2,711 gap before any retailer discounting.

Which is bigger, the Smith & Bradley Atlantis Blackfish Auto or the Seiko Prospex Marinemaster Marinemaster 1968 Heritage Diver's Watch?

The Smith & Bradley Atlantis Blackfish Auto wears larger at 44mm versus 42.6mm for the Seiko Prospex Marinemaster Marinemaster 1968 Heritage Diver's Watch — a 1.4mm difference across the dial.

Which has a longer power reserve, the Smith & Bradley Atlantis Blackfish Auto or the Seiko Prospex Marinemaster Marinemaster 1968 Heritage Diver's Watch?

The Seiko Prospex Marinemaster Marinemaster 1968 Heritage Diver's Watch carries a 72-hour power reserve against 38 hours on the Smith & Bradley Atlantis Blackfish Auto.

What movement does the Smith & Bradley Atlantis Blackfish Auto run compared to the Seiko Prospex Marinemaster Marinemaster 1968 Heritage Diver's Watch?

Both watches run automatic movements — the Smith & Bradley Atlantis Blackfish Auto uses the Sellita SW200 and the Seiko Prospex Marinemaster Marinemaster 1968 Heritage Diver's Watch uses the 8L45.

Side by side

Smith & Bradley Atlantis Blackfish AutovsSeiko Prospex Marinemaster Marinemaster 1968 Heritage Diver's Watch

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

Smith & Bradley Atlantis Blackfish Auto

atlantis-blackfish-automatic-dive-watch

MSRP $889

Seiko Prospex Marinemaster Marinemaster 1968 Heritage Diver's Watch

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MSRP $3,600

At a glance

11 of 29 specs differ

Diameter

Atlantis Blackfish Auto44mm

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

Power Reserve

Atlantis Blackfish Auto38h

Prospex Marinemaster Marinemaster 1968 Heritage Diver's Watch72h

Water Resistance

Atlantis Blackfish Auto300m

Prospex Marinemaster Marinemaster 1968 Heritage Diver's Watch300m

MSRP

Atlantis Blackfish Auto$889

Prospex Marinemaster Marinemaster 1968 Heritage Diver's Watch$3,600

Full specifications

Case

4 specs

Diameter

44mm

42.6mm

Thickness

12mm

14.1mm

Lug-to-Lug

46mm

49.3mm

Lug Width

22mm

20mm

Crystal & Dial

3 specs

Crystal Shape

Flat

Curved

AR Coating

Yes

Anti-reflective coating on inner surface

Lume

Superluminova

LumiBrite on hands, index(es) and bezel

Movement

3 specs

Caliber

Sellita SW200

8L45

Power Reserve

38h

72h

Jewels

Pricing

1 specs

MSRP

$889

$3,600

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