Side by side

AVI-8 Flyboy Airmaster GMT AutomaticvsSternglas Naos Großdatum

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
Naos Großdatum
SternglasNaos Großdatum
MSRP $323

At a glance

13 of 29 specs differ
Diameter
Flyboy Airmaster GMT Automatic40mm
Naos Großdatum38mm
Power Reserve
Flyboy Airmaster GMT Automatic40h
Naos Großdatum
Water Resistance
Flyboy Airmaster GMT Automatic50m
Naos Großdatum50m
MSRP
Flyboy Airmaster GMT Automatic$365
Naos Großdatum$323

Full specifications

Case

6 specs
Category
GMT
Dress
Diameter
40mm
38mm
Thickness
10mm
Lug-to-Lug
42mm
Lug Width
20mm
Material
316L Stainless Steel
Stainless Steel

Crystal & Dial

2 specs
Dial Color
Black
Lume
None
Luminova Punkten

Movement

4 specs
Caliber
NH34
Seiko VJ76
Type
Automatic
Quartz
Power Reserve
40h
Jewels
25

Pricing

1 specs
MSRP
$365
$323

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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.

Sternglas Naos Großdatum

The Sternglas Naos Großdatum is praised for its Bauhaus aesthetic and value, with one owner finding it an affordable alternative to other designs. However, some owners report it feels underwhelming and cheap, with a printed-on face, small font, and toy-like hands, and find the strap to be of poor quality. The watch features a 38mm stainless steel case, an Alabaster dial with beige LumiNova, and a Seiko TMI VJ76 quartz movement rated for -20/+20 seconds per month. On balance, owners and reviewers are divided, with the primary point of contention being the perceived quality and aesthetic execution of the Sternglas Naos Großdatum.

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