What movement does the Seiko Prospex SPEEDTIMER Mechanical Datsun 240Z Limited Edition run compared to the Spinnaker Tesei Titanium?

Both watches run automatic movements — the Seiko Prospex SPEEDTIMER Mechanical Datsun 240Z Limited Edition uses the 6R55 and the Spinnaker Tesei Titanium uses the SII NH35A.

Side by side

Seiko Prospex SPEEDTIMER Mechanical Datsun 240Z Limited EditionvsSpinnaker Tesei Titanium

Q: Which is cheaper, the Seiko Prospex SPEEDTIMER Mechanical Datsun 240Z Limited Edition or the Spinnaker Tesei Titanium?

At MSRP the Spinnaker Tesei Titanium is the cheaper of the two at $625, against $1,150 for the Seiko Prospex SPEEDTIMER Mechanical Datsun 240Z Limited Edition — a $525 gap before any retailer discounting.

Q: Which is bigger, the Seiko Prospex SPEEDTIMER Mechanical Datsun 240Z Limited Edition or the Spinnaker Tesei Titanium?

The Spinnaker Tesei Titanium wears larger at 42mm versus 39.5mm for the Seiko Prospex SPEEDTIMER Mechanical Datsun 240Z Limited Edition — a 2.5mm difference across the dial.

Q: Which has better water resistance, the Seiko Prospex SPEEDTIMER Mechanical Datsun 240Z Limited Edition or the Spinnaker Tesei Titanium?

The Spinnaker Tesei Titanium is rated to 200m versus 20m for the Seiko Prospex SPEEDTIMER Mechanical Datsun 240Z Limited Edition.

Q: Which has a longer power reserve, the Seiko Prospex SPEEDTIMER Mechanical Datsun 240Z Limited Edition or the Spinnaker Tesei Titanium?

The Seiko Prospex SPEEDTIMER Mechanical Datsun 240Z Limited Edition carries a 72-hour power reserve against 40 hours on the Spinnaker Tesei Titanium.

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

Seiko Prospex SPEEDTIMER Mechanical Datsun 240Z Limited Edition

spb517j1

MSRP $1,150

Spinnaker Tesei Titanium

tesei-titanium-automatic-matte-black-sp-5084-11

MSRP $625

At a glance

13 of 29 specs differ

Diameter

Prospex SPEEDTIMER Mechanical Datsun 240Z Limited Edition39.5mm

Tesei Titanium42mm

Power Reserve

Prospex SPEEDTIMER Mechanical Datsun 240Z Limited Edition72h

Tesei Titanium40h

Water Resistance

Prospex SPEEDTIMER Mechanical Datsun 240Z Limited Edition200m

Tesei Titanium200m

MSRP

Prospex SPEEDTIMER Mechanical Datsun 240Z Limited Edition$1,150

Tesei Titanium$625

Full specifications

Case

6 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 NH35A

Power Reserve

72h

40h

Jewels

Pricing

1 specs

MSRP

$1,150

$625

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