Side by side

Hamilton American Classic RailRoad Auto ChronovsZelos Spearfish 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
Spearfish GMT
ZelosSpearfish GMT
MSRP $999

At a glance

11 of 29 specs differ
Diameter
American Classic RailRoad Auto Chrono44mm
Spearfish GMT40mm
Power Reserve
American Classic RailRoad Auto Chrono60h
Spearfish GMT40h
Water Resistance
American Classic RailRoad Auto Chrono50m
Spearfish GMT200m
MSRP
American Classic RailRoad Auto Chrono$2,045
Spearfish GMT$999

Full specifications

Case

7 specs
Category
Chronograph
GMT
Diameter
44mm
40mm
Thickness
15.3mm
13mm
Lug-to-Lug
46mm
40mm
Lug Width
22mm
20mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
50m
200m

Crystal & Dial

1 specs
Dial Color
Black
Frost

Movement

2 specs
Caliber
H-21
Sellita SW330-2
Power Reserve
60h
40h

Pricing

1 specs
MSRP
$2,045
$999

Follow this matchup

Get a note when Hamilton American Classic RailRoad Auto Chrono vs Zelos Spearfish GMT gets more votes, a community discussion, or a price drop. No account needed.

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.

Zelos Spearfish GMT

The Zelos Spearfish GMT is widely praised for its exceptional value, with reviewers highlighting its superb finishing, flawless machining, and a tool-less micro-adjustment clasp that exceeds its price point. It features a La Joux-Perret G100 movement with a 68-hour power reserve, achieving an average accuracy of +2.6 seconds per day, or a Miyota 9075 movement offering flier-style GMT functionality. The 40mm case and bidirectional 48-click ceramic bezel are well-executed, though one reviewer noted a minor compromise in the end link fit. Overall, owners and reviewers rate the Zelos Spearfish GMT highly for its impressive finishing and value proposition.

Keep exploring

More watches worth a look

Matched to the watches above on size, movement, style and price — microbrands first. Open any one to dig in.

Adjacent matchups

People also compared

Comparisons nearby in the catalog — alternatives to the watches above paired against the matchup.