Which is cheaper, the AVI-8 Flyboy Airmaster GMT Automatic or the Hemel HFC Mechanical Chronograph?

At MSRP the AVI-8 Flyboy Airmaster GMT Automatic is the cheaper of the two at $365, against $550 for the Hemel HFC Mechanical Chronograph — a $185 gap before any retailer discounting.

Which has better water resistance, the AVI-8 Flyboy Airmaster GMT Automatic or the Hemel HFC Mechanical Chronograph?

The Hemel HFC Mechanical Chronograph is rated to 100m versus 50m for the AVI-8 Flyboy Airmaster GMT Automatic.

What movement does the AVI-8 Flyboy Airmaster GMT Automatic run compared to the Hemel HFC Mechanical Chronograph?

The AVI-8 Flyboy Airmaster GMT Automatic runs a automatic caliber (NH34), while the Hemel HFC Mechanical Chronograph runs a manual (Seagull ST19).

Side by side

AVI-8 Flyboy Airmaster GMT AutomaticvsHemel HFC Mechanical Chronograph

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

AVI-8 Flyboy Airmaster GMT Automatic

flyboy-airmaster-gmt-automatic-engine-black-av-4128-01

MSRP $365

Hemel HFC Mechanical Chronograph

the-airfoil

MSRP $550

At a glance

10 of 29 specs differ

Diameter

Flyboy Airmaster GMT Automatic40mm

HFC Mechanical Chronograph40mm

Power Reserve

Flyboy Airmaster GMT Automatic40h

HFC Mechanical Chronograph40h

Water Resistance

Flyboy Airmaster GMT Automatic50m

HFC Mechanical Chronograph100m

MSRP

Flyboy Airmaster GMT Automatic$365

HFC Mechanical Chronograph$550

Full specifications

Case

5 specs

Crystal & Dial

2 specs

Crystal

Sapphire

Domed Sapphire

Dial Color

Black

Airfoil (1970s British Pilot)

Movement

2 specs

Caliber

NH34

Seagull ST19

Type

Automatic

Manual

Pricing

1 specs

MSRP

$365

$550

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