Side by side

Hamilton American Classic RailRoad Auto ChronovsSpinnaker Dumas GMT

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

American Classic RailRoad Auto Chrono
HamiltonAmerican Classic RailRoad Auto Chrono
MSRP $2,045
Dumas GMT
SpinnakerDumas GMT
MSRP $399

At a glance

9 of 29 specs differ
Diameter
American Classic RailRoad Auto Chrono44mm
Dumas GMT44mm
Power Reserve
American Classic RailRoad Auto Chrono60h
Dumas GMT40h
Water Resistance
American Classic RailRoad Auto Chrono50m
Dumas GMT300m
MSRP
American Classic RailRoad Auto Chrono$2,045
Dumas GMT$399

Full specifications

Case

5 specs
Category
Chronograph
GMT
Thickness
15.3mm
15mm
Lug-to-Lug
46mm
48mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
50m
300m

Crystal & Dial

1 specs
Dial Color
Black
Blue

Movement

2 specs
Caliber
H-21
Seiko NH34A
Power Reserve
60h
40h

Pricing

1 specs
MSRP
$2,045
$399

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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.

Spinnaker Dumas GMT

Owners praise the Spinnaker Dumas GMT's satisfying lume, including on the crown, and good finishing, with one owner finding it wears well on a 17cm wrist. The watch features a Seiko NH34A GMT movement and a blue gradient dial. Reviewers note its 44mm diameter and 209g weight on the bracelet make it unsuitable for smaller wrists.

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