Side by side

AVI-8 Flyboy Airmaster GMT AutomaticvsHamilton Khaki Field King Day-Date

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
Khaki Field King Day-Date
HamiltonKhaki Field King Day-Date
MSRP $845

At a glance

9 of 29 specs differ
Diameter
Flyboy Airmaster GMT Automatic40mm
Khaki Field King Day-Date40mm
Power Reserve
Flyboy Airmaster GMT Automatic40h
Khaki Field King Day-Date80h
Water Resistance
Flyboy Airmaster GMT Automatic50m
Khaki Field King Day-Date100m
MSRP
Flyboy Airmaster GMT Automatic$365
Khaki Field King Day-Date$845

Full specifications

Case

6 specs
Category
GMT
Field
Thickness
11.8mm
Lug-to-Lug
46mm
Lug Width
20mm
Material
316L Stainless Steel
Stainless Steel
Water Resistance
50m
100m

Movement

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

Pricing

1 specs
MSRP
$365
$845

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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 Khaki Field King Day-Date

Hamilton Khaki Field King Day-Date owners widely praise its classic styling, 80-hour power reserve, and excellent value. Opinions on water resistance are split; some express concern over the 50m rating, while others find it sufficient for daily wear and swimming. One owner notes the stock strap can be stiff. Service costs range from $55 for routine maintenance to $220 for full service with movement replacement. On balance, owners rate the Hamilton Khaki Field King Day-Date highly for its classic aesthetics and impressive power reserve at its price point.

From video reviewers

The 80-hour power reserve from the H-40 automatic movement is a significant strength. The 50-meter water resistance is considered a limitation for a field watch.

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