Side by side

AVI-8 Flyboy Airmaster GMT AutomaticvsHamilton American Classic Valiant Auto

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
American Classic Valiant Auto
HamiltonAmerican Classic Valiant Auto
MSRP $645

At a glance

10 of 29 specs differ
Diameter
Flyboy Airmaster GMT Automatic40mm
American Classic Valiant Auto34mm
Power Reserve
Flyboy Airmaster GMT Automatic40h
American Classic Valiant Auto80h
Water Resistance
Flyboy Airmaster GMT Automatic50m
American Classic Valiant Auto50m
MSRP
Flyboy Airmaster GMT Automatic$365
American Classic Valiant Auto$645

Full specifications

Case

6 specs
Category
GMT
Dress
Diameter
40mm
34mm
Thickness
10.58mm
Lug-to-Lug
46mm
Lug Width
16mm
Material
316L Stainless Steel
Stainless Steel

Crystal & Dial

1 specs
Dial Color
Black
Silver

Movement

2 specs
Caliber
NH34
H-10
Power Reserve
40h
80h

Pricing

1 specs
MSRP
$365
$645

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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 Valiant Auto

Owners widely praise the Hamilton American Classic Valiant Auto for its classic design elements, such as the sunburst dial and Roman numerals, noting its suitability for everyday elegance and wearability under a cuff. One owner highlights the 39.5mm size and applied indices as a "hidden gem," while another appreciates the clean, simple design with thin Roman numerals. The watch is also commended for its comfortable bracelet and attractive lance hands, with confirmation that the bracelet is indeed changeable. Some owners note the date window's placement at three o'clock is a point of contention, and one owner reports the watch runs at approximately +6 seconds per day after ten years of intermittent use. On balance, owners rate the Hamilton American Classic Valiant Auto highly for its elegant, classic design and comfortable wearability at its price point.

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