Side by side

AVI-8 Flyboy Airmaster GMT AutomaticvsSpinnaker Cahill Automatic

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
Cahill Automatic
SpinnakerCahill Automatic
MSRP $350

At a glance

9 of 29 specs differ
Diameter
Flyboy Airmaster GMT Automatic40mm
Cahill Automatic42mm
Power Reserve
Flyboy Airmaster GMT Automatic40h
Cahill Automatic40h
Water Resistance
Flyboy Airmaster GMT Automatic50m
Cahill Automatic200m
MSRP
Flyboy Airmaster GMT Automatic$365
Cahill Automatic$350

Full specifications

Case

6 specs
Category
GMT
Diver
Diameter
40mm
42mm
Thickness
13.7mm
Lug-to-Lug
51mm
Lug Width
22mm
Water Resistance
50m
200m

Crystal & Dial

1 specs
Dial Color
Black
Green

Movement

1 specs
Caliber
NH34
SII NH35A

Pricing

1 specs
MSRP
$365
$350

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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.

Spinnaker Cahill Automatic

Owners widely praise the Spinnaker Cahill Automatic for its attractive vintage-inspired design, comfortable wearability on smaller wrists, and good timekeeping, with one owner specifically noting the large "maxi" indices and NATO strap as highlights. However, some find the lume application uneven and note the use of a mineral crystal. A significant concern raised by one owner is a report of internal component failures and a perceived lack of quality control within the brand. On balance, the Spinnaker Cahill Automatic is well-regarded by owners for its style and value, particularly at specific price points, despite some noted manufacturing inconsistencies.

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