Side by side

AVI-8 Flyboy Airmaster GMT AutomaticvsNivada Grenchen F77 MK2 41mm 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
F77 MK2 41mm Automatic
Nivada GrenchenF77 MK2 41mm Automatic
MSRP $1,460

At a glance

15 of 29 specs differ
Diameter
Flyboy Airmaster GMT Automatic40mm
F77 MK2 41mm Automatic41mm
Power Reserve
Flyboy Airmaster GMT Automatic40h
F77 MK2 41mm Automatic38h
Water Resistance
Flyboy Airmaster GMT Automatic50m
F77 MK2 41mm Automatic100m
MSRP
Flyboy Airmaster GMT Automatic$365
F77 MK2 41mm Automatic$1,460

Full specifications

Case

8 specs
Category
GMT
Sport
Diameter
40mm
41mm
Thickness
12.2mm
Lug-to-Lug
46.2mm
Lug Width
22mm
Material
316L Stainless Steel
Stainless Steel
Water Resistance
50m
100m
Caseback
Solid
316L Steel Caseback

Crystal & Dial

3 specs
AR Coating
Inner
Underside
Dial Color
Black
Meteorite
Lume
None
Super-LumiNova

Movement

3 specs
Caliber
NH34
Soprod M100
Beat Rate
28,800 vph
28 vph
Power Reserve
40h
38h

Pricing

1 specs
MSRP
$365
$1,460

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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.

Nivada Grenchen F77 MK2 41mm Automatic

The Nivada Grenchen F77 MK2 41mm Automatic is praised for its comfortable wearability, with reviewers highlighting its reworked integrated lug design and slim case profile. The "carbon effect" basketweave dial is frequently cited as a modern, distinctive touch on the retro design. The watch is powered by the Soprod P024 automatic movement, which has a 38-hour power reserve. Some find the gold-plated version loud, and the dauphine hands lack lume. The stainless steel model is priced at $1,460 to $1,560 USD. On balance, reviewers consider the Nivada Grenchen F77 MK2 41mm Automatic a strong integrated bracelet option at its price point, lauded for its unique design and comfortable fit.

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