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

At MSRP the Spinnaker Piccard Skeleton is the cheaper of the two at $550, against $995 for the Seiko Prospex SPEEDTIMER Mechanical — a $445 gap before any retailer discounting.

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

The Spinnaker Piccard Skeleton wears larger at 45mm versus 39.5mm for the Seiko Prospex SPEEDTIMER Mechanical — a 5.5mm difference across the dial.

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

The Spinnaker Piccard Skeleton is rated to 550m versus 20m for the Seiko Prospex SPEEDTIMER Mechanical.

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

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

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

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

Side by side

Seiko Prospex SPEEDTIMER MechanicalvsSpinnaker Piccard Skeleton

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

Seiko Prospex SPEEDTIMER Mechanical

spb513j1

MSRP $995

Spinnaker Piccard Skeleton

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

MSRP $550

At a glance

14 of 29 specs differ

Diameter

Prospex SPEEDTIMER Mechanical39.5mm

Piccard Skeleton45mm

Power Reserve

Prospex SPEEDTIMER Mechanical72h

Piccard Skeleton40h

Water Resistance

Prospex SPEEDTIMER Mechanical200m

Piccard Skeleton550m

MSRP

Prospex SPEEDTIMER Mechanical$995

Piccard Skeleton$550

Full specifications

Case

7 specs

Crystal & Dial

3 specs

Crystal Shape

Curved

Flat

AR Coating

Anti-reflective coating on inner surface

Inner

Lume

LumiBrite on hands and index(es)

None

Movement

3 specs

Caliber

6R55

SII NH38A

Power Reserve

72h

40h

Jewels

Pricing

1 specs

MSRP

$995

$550

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