Side by side
Seiko Prospex SPEEDTIMER Mechanical ChronographvsTimefactors Vanguard
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
12 of 29 specs differDiameter
Prospex SPEEDTIMER Mechanical Chronograph42mm
Vanguard40mm
Power Reserve
Prospex SPEEDTIMER Mechanical Chronograph45h
Vanguard—
Water Resistance
Prospex SPEEDTIMER Mechanical Chronograph100m
Vanguard100m
MSRP
Prospex SPEEDTIMER Mechanical Chronograph$2,500
Vanguard$1,027
Full specifications
Case
4 specsCategory
Chronograph
—
Diameter
42mm
40mm
Thickness
14.6mm
16mm
Lug-to-Lug
49.5mm
48mm
Crystal & Dial
4 specsCrystal Shape
Curved
Flat
AR Coating
Anti-reflective coating on inner surface
Inner
Dial Color
Black
—
Lume
LumiBrite on hands and index(es)
None
Movement
3 specsCaliber
8R48
NE88
Power Reserve
45h
—
Jewels
34
25
Pricing
1 specsMSRP
$2,500
$1,027
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