What movement does the Seiko Prospex Sea 1970 Heritage Diver's Save the Ocean Special Edition run compared to the Spinnaker Piccard Skeleton?

Both watches run automatic movements — the Seiko Prospex Sea 1970 Heritage Diver's Save the Ocean Special Edition uses the 6R35 and the Spinnaker Piccard Skeleton uses the SII NH38A.

Side by side

Seiko Prospex Sea 1970 Heritage Diver's Save the Ocean Special EditionvsSpinnaker Piccard Skeleton

Q: Which is cheaper, the Seiko Prospex Sea 1970 Heritage Diver's Save the Ocean Special Edition or the Spinnaker Piccard Skeleton?

At MSRP the Spinnaker Piccard Skeleton is the cheaper of the two at $550, against $1,350 for the Seiko Prospex Sea 1970 Heritage Diver's Save the Ocean Special Edition — a $800 gap before any retailer discounting.

Q: Which is bigger, the Seiko Prospex Sea 1970 Heritage Diver's Save the Ocean Special Edition or the Spinnaker Piccard Skeleton?

The Spinnaker Piccard Skeleton wears larger at 45mm versus 42.7mm for the Seiko Prospex Sea 1970 Heritage Diver's Save the Ocean Special Edition — a 2.3mm difference across the dial.

Q: Which has better water resistance, the Seiko Prospex Sea 1970 Heritage Diver's Save the Ocean Special Edition or the Spinnaker Piccard Skeleton?

The Spinnaker Piccard Skeleton is rated to 550m versus 200m for the Seiko Prospex Sea 1970 Heritage Diver's Save the Ocean Special Edition.

Q: Which has a longer power reserve, the Seiko Prospex Sea 1970 Heritage Diver's Save the Ocean Special Edition or the Spinnaker Piccard Skeleton?

The Seiko Prospex Sea 1970 Heritage Diver's Save the Ocean Special Edition carries a 70-hour power reserve against 40 hours on the Spinnaker Piccard Skeleton.

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

Seiko Prospex Sea 1970 Heritage Diver's Save the Ocean Special Edition

spb301j1

MSRP $1,350

Spinnaker Piccard Skeleton

piccard-skeleton-automatic-dust-black-sp-5135-11

MSRP $550

At a glance

13 of 29 specs differ

Diameter

Prospex Sea 1970 Heritage Diver's Save the Ocean Special Edition42.7mm

Piccard Skeleton45mm

Power Reserve

Prospex Sea 1970 Heritage Diver's Save the Ocean Special Edition70h

Piccard Skeleton40h

Water Resistance

Prospex Sea 1970 Heritage Diver's Save the Ocean Special Edition200m

Piccard Skeleton550m

MSRP

Prospex Sea 1970 Heritage Diver's Save the Ocean Special Edition$1,350

Piccard Skeleton$550

Full specifications

Case

6 specs

Diameter

42.7mm

45mm

Thickness

13.2mm

21mm

Lug-to-Lug

46.4mm

52mm

Lug Width

20mm

22mm

Material

Stainless Steel

316L Stainless Steel

Water Resistance

200m

550m

Crystal & Dial

3 specs

Crystal Shape

Curved

Flat

AR Coating

Anti-reflective coating on inner surface

Inner

Lume

LumiBrite on hands, index(es) and bezel

None

Movement

3 specs

Caliber

6R35

SII NH38A

Power Reserve

70h

40h

Jewels

Pricing

1 specs

MSRP

$1,350

$550

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