Side by side

Hamilton American Classic RailRoad Auto ChronovsSeiko Prospex SPEEDTIMER

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

What people say

Owners + reviewers, side by side

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

Hamilton American Classic RailRoad Auto Chrono

Owners widely praise the Hamilton American Classic RailRoad Auto Chrono for its historical brand appeal and spectacular appearance, calling the ETA 7750 movement a "tank" and appreciating the date magnifier's integration. Some find its design a bit busy compared to other models. One owner notes an 80-hour power reserve from the H-10 movement and a 40mm case with turned-down lugs for a thinner appearance. Overall, owners rate the Hamilton American Classic RailRoad Auto Chrono highly for its historical brand appeal and robust movement at its price point.

Seiko Prospex SPEEDTIMER

Owners widely praise the Seiko Prospex SPEEDTIMER for its attractive vintage-inspired design and compact 39mm size, with one owner finding the red dial unique and gorgeous. Reviewers and owners note the solar-powered quartz movement, with one owner considering $700 expensive for this specification and another wishing for a thinner case. The SPEEDTIMER is described as a sturdy and reliable everyday watch, though one owner questioned its resale value. Overall, owners and reviewers appreciate the Seiko Prospex SPEEDTIMER for its stylish, compact design and solar functionality, despite some finding the price point and case thickness slightly high.

At a glance

13 of 29 specs differ
Diameter
American Classic RailRoad Auto Chrono44mm
Prospex SPEEDTIMER42.5mm
Power Reserve
American Classic RailRoad Auto Chrono60h
Prospex SPEEDTIMER45h
Water Resistance
American Classic RailRoad Auto Chrono50m
Prospex SPEEDTIMER100m
MSRP
American Classic RailRoad Auto Chrono$2,045
Prospex SPEEDTIMER$3,000

Full specifications

Case

5 specs
Diameter
44mm
42.5mm
Thickness
15.3mm
15.1mm
Lug-to-Lug
0mm
50mm
Lug Width
22mm
20mm
Water Resistance
50m
100m

Crystal & Dial

4 specs
Crystal Shape
Curved
AR Coating
Anti-reflective coating on inner surface
Dial Color
Black
Lume
None
LumiBrite on hands and index(es)

Movement

3 specs
Caliber
H-21
8R46
Power Reserve
60h
45h
Jewels
0
34

Pricing

1 specs
MSRP
$2,045
$3,000
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