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AVI-8 Flyboy Airmaster GMT AutomaticvsNivada Grenchen Depthmaster

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

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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 Depthmaster

Owners widely report terrific build quality and a feel similar to the 1960s original, with some appreciating its reasonable lug-to-lug and better-than-expected appearance in person. The compact 39mm case is praised for its wearability, especially on smaller wrists, and offers impressive 1,000m water resistance. However, the Soprod P024 movement's 38-hour power reserve is a point of criticism, as is a bezel that can be difficult to grip and weak lume. Some owners find the watch wears on the smaller side, and the date complication is seen by one owner as detracting from the design. The "Pacman" variant is noted as polarizing, with one owner questioning their purchase, while the "Ghost Purple" variant's 30 and 45 numerals are described as having a rushed aesthetic. Overall, owners and reviewers rate the Nivada Grenchen Depthmaster highly for its faithful reissue, impressive water resistance, and comfortable wearability at a competitive price.

At a glance

13 of 29 specs differ
Diameter
Flyboy Airmaster GMT Automatic40mm
Depthmaster39mm
Power Reserve
Flyboy Airmaster GMT Automatic
Depthmaster38h
Water Resistance
Flyboy Airmaster GMT Automatic50m
Depthmaster1,000m
MSRP
Flyboy Airmaster GMT Automatic$365
Depthmaster$1,050

Full specifications

Case

8 specs
Category
GMT
Diver
Diameter
40mm
39mm
Thickness
13mm
Lug-to-Lug
39mm
Lug Width
20mm
Material
316L Stainless Steel
Stainless Steel
Water Resistance
50m
1000m
Caseback
Stainless Steel 316

Crystal & Dial

1 specs
Lume
None
Super-LumiNova

Movement

3 specs
Caliber
Seiko NH34
Sellita SW200-1
Power Reserve
0h
38h
Complications
None
GMT

Pricing

1 specs
MSRP
$365
$1,050
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