Seiko Prospex SPEEDTIMER SPEEDTIMER Solar Chronograph Limited EditionvsUndone Vintage Arctic Blue
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Measurements
Catalog photos are all shot at the same flattering size. These aren't: every case below shares one millimeter scale.

Prospex SPEEDTIMER SPEEDTIMER Solar Chronograph Limited Edition

Vintage Arctic Blue
Diameter
39mm
40mm
Lug-to-Lug
45.5mm
n/a
Thickness
13.3mm
12.7mm
lowest
Water Resistance
100m
highest
30m
MSRP
$700
$265
lowest
Movement
Seiko V192
Seiko VK64
Case
5 specsDiameter
39mm
40mm
Thickness
13.3mm
12.7mm
Lug-to-Lug
45.5mm
n/a
Lug Width
20mm
n/a
Water Resistance
100m
30m
Crystal & Dial
5 specsCrystal
Sapphire
K1
Crystal Shape
Curved
n/a
AR Coating
Anti-reflective coating on inner surface
n/a
Dial Color
n/a
n/a
Lume
LumiBrite on hands and index(es)
None
Movement
1 specsCaliber
Seiko V192
Seiko VK64
Pricing
1 specsMSRP
$700
$265
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