Which is cheaper, the Sternglas Naos Mondphase or the Seiko Prospex SPEEDTIMER Mechanical Datsun 240Z Limited Edition?

At MSRP the Sternglas Naos Mondphase is the cheaper of the two at $323, against $1,150 for the Seiko Prospex SPEEDTIMER Mechanical Datsun 240Z Limited Edition — a $827 gap before any retailer discounting.

Which is bigger, the Sternglas Naos Mondphase or the Seiko Prospex SPEEDTIMER Mechanical Datsun 240Z Limited Edition?

The Seiko Prospex SPEEDTIMER Mechanical Datsun 240Z Limited Edition wears larger at 39.5mm versus 38mm for the Sternglas Naos Mondphase — a 1.5mm difference across the dial.

Which has better water resistance, the Sternglas Naos Mondphase or the Seiko Prospex SPEEDTIMER Mechanical Datsun 240Z Limited Edition?

The Sternglas Naos Mondphase is rated to 50m versus 20m for the Seiko Prospex SPEEDTIMER Mechanical Datsun 240Z Limited Edition.

What movement does the Sternglas Naos Mondphase run compared to the Seiko Prospex SPEEDTIMER Mechanical Datsun 240Z Limited Edition?

The Sternglas Naos Mondphase runs a quartz caliber (Seiko VJ76), while the Seiko Prospex SPEEDTIMER Mechanical Datsun 240Z Limited Edition runs a automatic (6R55).

Side by side

Sternglas Naos MondphasevsSeiko Prospex SPEEDTIMER Mechanical Datsun 240Z Limited Edition

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

Sternglas Naos Mondphase

naos-mondphase-mitternachtsblau

MSRP $323

Seiko Prospex SPEEDTIMER Mechanical Datsun 240Z Limited Edition

spb517j1

MSRP $1,150

At a glance

13 of 29 specs differ

Diameter

Naos Mondphase38mm

Prospex SPEEDTIMER Mechanical Datsun 240Z Limited Edition39.5mm

Power Reserve

Naos Mondphase—

Prospex SPEEDTIMER Mechanical Datsun 240Z Limited Edition72h

Water Resistance

Naos Mondphase50m

Prospex SPEEDTIMER Mechanical Datsun 240Z Limited Edition200m

MSRP

Naos Mondphase$323

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

Full specifications

Case

4 specs

Diameter

38mm

39.5mm

Thickness

10mm

12mm

Lug-to-Lug

42mm

44.5mm

Water Resistance

50m

200m

Crystal & Dial

4 specs

Crystal Shape

Flat

Curved

AR Coating

Inner

Anti-reflective coating on inner surface

Dial Color

—

Black

Lume

Luminova Punkten

LumiBrite on hands and index(es)

Movement

4 specs

Caliber

Seiko VJ76

6R55

Type

Quartz

Automatic

Power Reserve

—

72h

Jewels

—

Pricing

1 specs

MSRP

$323

$1,150

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