Side by side

Hamilton American Classic RailRoad Auto ChronovsZelos Hammerhead V3 300m Bronze

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
Hammerhead V3 300m Bronze
ZelosHammerhead V3 300m Bronze
MSRP $449

At a glance

10 of 29 specs differ
Diameter
American Classic RailRoad Auto Chrono44mm
Hammerhead V3 300m Bronze44mm
Power Reserve
American Classic RailRoad Auto Chrono60h
Hammerhead V3 300m Bronze40h
Water Resistance
American Classic RailRoad Auto Chrono50m
Hammerhead V3 300m Bronze300m
MSRP
American Classic RailRoad Auto Chrono$2,045
Hammerhead V3 300m Bronze$449

Full specifications

Case

5 specs
Category
Chronograph
Diver
Thickness
15.3mm
13mm
Lug-to-Lug
46mm
44mm
Material
Stainless Steel
Titanium
Water Resistance
50m
300m

Crystal & Dial

2 specs
Crystal
Sapphire
Domed Sapphire
Dial Color
Black
Bronze - Frost

Movement

2 specs
Caliber
H-21
Seiko NH35
Power Reserve
60h
40h

Pricing

1 specs
MSRP
$2,045
$449

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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.

Zelos Hammerhead V3 300m Bronze

Owners widely praise the Zelos Hammerhead V3 300m Bronze for its distinctive 70s-inspired design, slim 13.5mm case, and improved lume, offering a sophisticated timepiece at an accessible price point starting at $349. The unique dial is noted for evoking an otherworldly feeling, and the comfortable bracelet features on-the-fly micro-adjustment. Some enthusiasts express frustration with shipping delays and a desire to see the watch on a wrist before purchase. One owner flags that the clasp material could be more scratch-resistant, and resizing bracelet pins can be stubborn. On balance, owners rate the Zelos Hammerhead V3 300m Bronze highly for its unique design and build quality at its price point.

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