Side by side

Bremont Altitude Perpetual Calendar GMTvsHamilton American Classic Spirit of Liberty Auto Chrono

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

Altitude Perpetual Calendar GMT
BremontAltitude Perpetual Calendar GMT
MSRP $38,450

At a glance

8 of 29 specs differ
Diameter
Altitude Perpetual Calendar GMT42mm
American Classic Spirit of Liberty Auto Chrono42mm
Power Reserve
Altitude Perpetual Calendar GMT40h
American Classic Spirit of Liberty Auto Chrono40h
Water Resistance
Altitude Perpetual Calendar GMT
American Classic Spirit of Liberty Auto Chrono50m
MSRP
Altitude Perpetual Calendar GMT$38,450
American Classic Spirit of Liberty Auto Chrono$2,225

Full specifications

Case

5 specs
Category
GMT
Chronograph
Thickness
12.65mm
14.75mm
Lug-to-Lug
46mm
Material
Titanium
Stainless Steel
Water Resistance
50m

Crystal & Dial

1 specs
Dial Color
Blue
Black

Movement

1 specs
Caliber
H-21

Pricing

1 specs
MSRP
$38,450
$2,225

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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.

Bremont Altitude Perpetual Calendar GMT

The Bremont Altitude Perpetual Calendar GMT is a highly exclusive piece, with one owner noting its $44,000 price point raises questions about its target audience and suggesting it may be a limited production showpiece. Reviewers highlight its refined Trip-Tick case, now featuring softer curves, a 42mm diameter, and a 12.23mm thickness in grade 2 titanium, though the oversized crowns are flagged as a potential drawback. Overall, owners and reviewers acknowledge the Bremont Altitude Perpetual Calendar GMT as a distinctive, albeit niche, high-complication offering with a notable case refinement.

Hamilton American Classic Spirit of Liberty Auto Chrono

Owners widely praise the Hamilton American Classic Spirit of Liberty Auto Chrono for its impressive craftsmanship, details, and overall finish, noting sharp edges on the mixed brushed and polished lugs that give it a premium look and a refined yet bold presence. The watch offers an improved 60-hour power reserve and increased precision. However, its pushers are noted as being chunky. On balance, owners rate the Hamilton American Classic Spirit of Liberty Auto Chrono highly for its premium finishing and refined presence on the wrist.

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