Side by side

AVI-8 Flyboy Airmaster GMT AutomaticvsStudio Underd0g Full Moon

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
Full Moon
Studio Underd0gFull Moon
MSRP $800

At a glance

8 of 29 specs differ
Diameter
Flyboy Airmaster GMT Automatic40mm
Full Moon39.5mm
Power Reserve
Flyboy Airmaster GMT Automatic40h
Full Moon40h
Water Resistance
Flyboy Airmaster GMT Automatic50m
Full Moon
MSRP
Flyboy Airmaster GMT Automatic$365
Full Moon$800

Full specifications

Case

4 specs
Category
GMT
Casual
Diameter
40mm
39.5mm
Material
316L Stainless Steel
Stainless Steel
Water Resistance
50m

Crystal & Dial

1 specs
Dial Color
Black
Standard

Movement

2 specs
Caliber
NH34
Type
Automatic
Manual

Pricing

1 specs
MSRP
$365
$800

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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.

Studio Underd0g Full Moon

Owners widely praise the Studio Underd0g Full Moon's harmonious creamy dial and its 37mm case, which fits flawlessly. The innovative sapphire disc with numerals is a highlight, though two visible screws holding it are noted as a minor aesthetic drawback. Some owners find the watch overpriced, while others see value in the upgraded Sellita movement under $1k. Lume is surprisingly good, and the included NATO strap is preferred by some over the leather. Accuracy ranges from +1/+2 seconds per day to about -6 seconds per day. On balance, owners rate the Studio Underd0g Full Moon highly for its versatile dial and well-fitting case at the price point.

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