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Castor Watches LastarriavsSeiko Prospex SPEEDTIMER

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

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Lastarria
Castor WatchesLastarria
Prospex SPEEDTIMER
SeikoProspex SPEEDTIMER
MSRP $725
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Buy used on eBay ↗
Buy from Seiko ↗
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At a glance

13 of 29 specs differ
Diameter
Lastarria40mm
Prospex SPEEDTIMER39mm
Power Reserve
Lastarria—
Prospex SPEEDTIMER40h
Water Resistance
Lastarria50m
Prospex SPEEDTIMER100m
MSRP
Lastarria—
Prospex SPEEDTIMER$725

Full specifications

Case

5 specs
Category
—
Chronograph
Diameter
40mm
39mm
Thickness
10mm
13.3mm
Lug-to-Lug
—
45.5mm
Water Resistance
50m
100m

Crystal & Dial

5 specs
Crystal
Mineral
Sapphire
Crystal Shape
Flat
Curved
AR Coating
Inner
Anti-reflective coating on inner surface
Dial Color
White
Black
Lume
None
LumiBrite on hands and index(es)

Movement

2 specs
Caliber
—
V192
Power Reserve
—
40h

Pricing

1 specs
MSRP
—
$725
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