Which is cheaper, the Seiko Prospex Sea or the Spinnaker Piccard Skeleton?

At MSRP the Spinnaker Piccard Skeleton is the cheaper of the two at $550, against $1,100 for the Seiko Prospex Sea — a $550 gap before any retailer discounting.

Which is bigger, the Seiko Prospex Sea or the Spinnaker Piccard Skeleton?

The Spinnaker Piccard Skeleton wears larger at 45mm versus 41.3mm for the Seiko Prospex Sea — a 3.7mm difference across the dial.

Which has better water resistance, the Seiko Prospex Sea or the Spinnaker Piccard Skeleton?

The Spinnaker Piccard Skeleton is rated to 550m versus 300m for the Seiko Prospex Sea.

Which has a longer power reserve, the Seiko Prospex Sea or the Spinnaker Piccard Skeleton?

The Seiko Prospex Sea carries a 72-hour power reserve against 40 hours on the Spinnaker Piccard Skeleton.

What movement does the Seiko Prospex Sea run compared to the Spinnaker Piccard Skeleton?

Both watches run automatic movements — the Seiko Prospex Sea uses the 6R55 and the Spinnaker Piccard Skeleton uses the SII NH38A.

Side by side

Seiko Prospex SeavsSpinnaker Piccard Skeleton

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

Seiko Prospex Sea

spb481j1

MSRP $1,100

Spinnaker Piccard Skeleton

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

MSRP $550

At a glance

12 of 29 specs differ

Diameter

Prospex Sea41.3mm

Piccard Skeleton45mm

Power Reserve

Prospex Sea72h

Piccard Skeleton40h

Water Resistance

Prospex Sea300m

Piccard Skeleton550m

MSRP

Prospex Sea$1,100

Piccard Skeleton$550

Full specifications

Case

6 specs

Diameter

41.3mm

45mm

Thickness

12.5mm

21mm

Lug-to-Lug

48.2mm

52mm

Lug Width

20mm

22mm

Material

Stainless Steel

316L Stainless Steel

Water Resistance

300m

550m

Crystal & Dial

2 specs

AR Coating

Anti-reflective coating on inner surface

Inner

Lume

LumiBrite on hands, index(es) and bezel

None

Movement

3 specs

Caliber

6R55

SII NH38A

Power Reserve

72h

40h

Jewels

Pricing

1 specs

MSRP

$1,100

$550

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Seiko Prospex SeavsSpinnaker Piccard Skeleton

At a glance

Full specifications

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