Which is cheaper, the Seiko Prospex Sea 1965 Heritage Diver's Watch or the Spinnaker Tesei Forged Carbon?

At MSRP the Spinnaker Tesei Forged Carbon is the cheaper of the two at $550, against $1,300 for the Seiko Prospex Sea 1965 Heritage Diver's Watch — a $750 gap before any retailer discounting.

Which is bigger, the Seiko Prospex Sea 1965 Heritage Diver's Watch or the Spinnaker Tesei Forged Carbon?

The Spinnaker Tesei Forged Carbon wears larger at 43mm versus 40mm for the Seiko Prospex Sea 1965 Heritage Diver's Watch — a 3mm difference across the dial.

Which has a longer power reserve, the Seiko Prospex Sea 1965 Heritage Diver's Watch or the Spinnaker Tesei Forged Carbon?

The Seiko Prospex Sea 1965 Heritage Diver's Watch carries a 72-hour power reserve against 40 hours on the Spinnaker Tesei Forged Carbon.

What movement does the Seiko Prospex Sea 1965 Heritage Diver's Watch run compared to the Spinnaker Tesei Forged Carbon?

Both watches run automatic movements — the Seiko Prospex Sea 1965 Heritage Diver's Watch uses the 6R55 and the Spinnaker Tesei Forged Carbon uses the SII NH35A.

Side by side

Seiko Prospex Sea 1965 Heritage Diver's WatchvsSpinnaker Tesei Forged Carbon

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

Seiko Prospex Sea 1965 Heritage Diver's Watch

spb451j1

MSRP $1,300

Spinnaker Tesei Forged Carbon

tesei-forged-carbon-automatic-limited-edition-white-frost-sp-5143-01

MSRP $550

At a glance

13 of 29 specs differ

Diameter

Prospex Sea 1965 Heritage Diver's Watch40mm

Tesei Forged Carbon43mm

Power Reserve

Prospex Sea 1965 Heritage Diver's Watch72h

Tesei Forged Carbon40h

Water Resistance

Prospex Sea 1965 Heritage Diver's Watch300m

Tesei Forged Carbon300m

MSRP

Prospex Sea 1965 Heritage Diver's Watch$1,300

Tesei Forged Carbon$550

Full specifications

Case

5 specs

Diameter

40mm

43mm

Thickness

13mm

16mm

Lug-to-Lug

46.4mm

52mm

Lug Width

20mm

22mm

Material

Stainless Steel

316L Stainless Steel

Crystal & Dial

4 specs

Crystal Shape

Curved

Flat

AR Coating

Anti-reflective coating on inner surface

Inner

Dial Color

Black

White

Lume

LumiBrite on hands, index(es) and bezel

None

Movement

3 specs

Caliber

6R55

SII NH35A

Power Reserve

72h

40h

Jewels

Pricing

1 specs

MSRP

$1,300

$550

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