Side by side
Hamilton American Classic RailRoad Auto ChronovsZero West S4 Blackout P9427 Spitfire
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
7 of 29 specs differDiameter
American Classic RailRoad Auto Chrono44mm
S4 Blackout P9427 Spitfire44mm
Power Reserve
American Classic RailRoad Auto Chrono60h
S4 Blackout P9427 Spitfire38h
Water Resistance
American Classic RailRoad Auto Chrono50m
S4 Blackout P9427 Spitfire100m
MSRP
American Classic RailRoad Auto Chrono$2,045
S4 Blackout P9427 Spitfire—
Full specifications
Case
4 specsCategory
Chronograph
—
Thickness
15.3mm
14.1mm
Lug-to-Lug
46mm
49.6mm
Water Resistance
50m
100m
Movement
2 specsCaliber
H-21
ETA 2824
Power Reserve
60h
38h
Pricing
1 specsMSRP
$2,045
—
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