Side by side

Hamilton American Classic Spirit of Liberty Auto ChronovsLum-Tec RPM

Q: Which is cheaper, the Hamilton American Classic Spirit of Liberty Auto Chrono or the Lum-Tec RPM?

At MSRP the Lum-Tec RPM is the cheaper of the two at $495, against $2,225 for the Hamilton American Classic Spirit of Liberty Auto Chrono — a $1,730 gap before any retailer discounting.

Q: Which is bigger, the Hamilton American Classic Spirit of Liberty Auto Chrono or the Lum-Tec RPM?

The Lum-Tec RPM wears larger at 43mm versus 42mm for the Hamilton American Classic Spirit of Liberty Auto Chrono — a 1mm difference across the dial.

Q: What movement does the Hamilton American Classic Spirit of Liberty Auto Chrono run compared to the Lum-Tec RPM?

The Hamilton American Classic Spirit of Liberty Auto Chrono runs a automatic caliber (H-21), while the Lum-Tec RPM runs a quartz.

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

Hamilton American Classic Spirit of Liberty Auto Chrono

h32416131

MSRP $2,225

Lum-Tec RPM

rpm-3

MSRP $495

At a glance

9 of 29 specs differ

Diameter

American Classic Spirit of Liberty Auto Chrono42mm

RPM43mm

Power Reserve

American Classic Spirit of Liberty Auto Chrono40h

RPM40h

Water Resistance

American Classic Spirit of Liberty Auto Chrono50m

RPM50m

MSRP

American Classic Spirit of Liberty Auto Chrono$2,225

RPM$495

Full specifications

Case

5 specs

Diameter

42mm

43mm

Thickness

14.75mm

12.3mm

Lug-to-Lug

46mm

41mm

Lug Width

22mm

20mm

Material

Stainless Steel

Titanium

Crystal & Dial

1 specs

Dial Color

Black

RPM 3

Movement

2 specs

Caliber

H-21

—

Type

Automatic

Quartz

Pricing

1 specs

MSRP

$2,225

$495

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