Side by side

AVI-8 Flyboy Airmaster GMT AutomaticvsHamilton American Classic Spirit of Liberty Auto Chrono

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

Flyboy Airmaster GMT Automatic
AVI-8Flyboy Airmaster GMT Automatic
MSRP $365

At a glance

8 of 29 specs differ
Diameter
Flyboy Airmaster GMT Automatic40mm
American Classic Spirit of Liberty Auto Chrono42mm
Power Reserve
Flyboy Airmaster GMT Automatic40h
American Classic Spirit of Liberty Auto Chrono40h
Water Resistance
Flyboy Airmaster GMT Automatic50m
American Classic Spirit of Liberty Auto Chrono50m
MSRP
Flyboy Airmaster GMT Automatic$365
American Classic Spirit of Liberty Auto Chrono$2,225

Full specifications

Case

6 specs
Category
GMT
Chronograph
Diameter
40mm
42mm
Thickness
14.75mm
Lug-to-Lug
46mm
Lug Width
22mm
Material
316L Stainless Steel
Stainless Steel

Movement

1 specs
Caliber
NH34
H-21

Pricing

1 specs
MSRP
$365
$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.

AVI-8 Flyboy Airmaster GMT Automatic

Owners widely praise the AVI-8 Flyboy Airmaster GMT Automatic for its robust build quality, intricate three-timezone function, and crisp dial texture. The watch is noted for its wearable 41mm case size and 48.5mm lug-to-lug, with an internally positioned GMT complication that maintains a clean dial appearance. Some owners report the stock leather strap feels cheap and limits strap changing options. On balance, owners rate the AVI-8 Flyboy Airmaster GMT Automatic highly for its solid finishing and value, particularly highlighting the dial's depth and texture.

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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