AVI-8 Flyboy Airmaster GMT AutomaticvsUndone Basecamp Stealth Automatic

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Measurements

Catalog photos are all shot at the same flattering size. These aren't: every case below shares one millimeter scale.

AVI-8 Flyboy Airmaster GMT Automatic at true scale

Flyboy Airmaster GMT Automatic

Undone Basecamp Stealth Automatic at true scale

Basecamp Stealth Automatic

Diameter

40mm

40mm

Water Resistance

50m

100m

highest

MSRP

$345

lowest

$432

Movement

Seiko NH34

Seiko NH34

Case

5 specs
Thickness
n/a
n/a
Lug-to-Lug
n/a
n/a
Lug Width
n/a
n/a
Material
316L Stainless Steel
Stainless Steel
Water Resistance
50m
100m

Crystal & Dial

2 specs
Crystal
Sapphire
n/a
Dial Color
Black
n/a

Movement

1 specs
Power Reserve
0h
n/a

Pricing

1 specs
MSRP
$345
$432
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Reviews

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 unique aviator style, robust build, and crisp dial texture, with one owner noting a complex three-timezone function. The watch is considered fun and wearable with solid dimensions, though some find the dial busy and difficult to read, and the stock strap is noted as cheap with limited lug hole options. Some owners question the quality relative to price, while others acknowledge that AVI-8 watches, often featuring Seiko NH34 movements, are generally considered decent for their $100-$200 price point. On balance, owners rate the AVI-8 Flyboy Airmaster GMT Automatic well for its standout aviator design and value at the price.

Undone Basecamp Stealth Automatic

The Undone Basecamp Stealth Automatic is praised for its versatile 40mm case proportions and the reliability of its Seiko NH34 automatic movement. Owners report it keeps time within approximately 20 seconds per week. Some iterations are critiqued for a date window placement between 4 and 5 o'clock. Overall, owners and reviewers rate the Undone Basecamp Stealth Automatic well for its reliable movement and wearable case size.

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