Side by side

AVI-8 Flyboy Airmaster GMT AutomaticvsFortis Marinemaster M-44 DLC

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
Marinemaster M-44 DLC
FortisMarinemaster M-44 DLC
MSRP $5,450

At a glance

10 of 29 specs differ
Diameter
Flyboy Airmaster GMT Automatic40mm
Marinemaster M-44 DLC44mm
Power Reserve
Flyboy Airmaster GMT Automatic40h
Marinemaster M-44 DLC38h
Water Resistance
Flyboy Airmaster GMT Automatic50m
Marinemaster M-44 DLC300m
MSRP
Flyboy Airmaster GMT Automatic$365
Marinemaster M-44 DLC$5,450

Full specifications

Case

6 specs
Category
GMT
Diver
Diameter
40mm
44mm
Thickness
14mm
Lug Width
22mm
Material
316L Stainless Steel
Stainless Steel (DLC)
Water Resistance
50m
300m

Movement

3 specs
Caliber
NH34
Sellita SW220-1
Power Reserve
40h
38h
Jewels
25
26

Pricing

1 specs
MSRP
$365
$5,450

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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.

Fortis Marinemaster M-44 DLC

The Fortis Marinemaster M-44 DLC is widely praised for its robust COSC-certified Kenissi Werk 11 movement, offering a 70-hour power reserve, and its stealthy, scratch-resistant Dianoir DLC coating. Owners find it comfortable to wear despite its 44mm size, with one owner considering it a standout piece. Some reviewers note a subtle difference in the color tone of the DLC coating on the crown and bezel lock between variants. Overall, owners and reviewers regard the Fortis Marinemaster M-44 DLC highly for its durable construction and reliable, high-spec movement.

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