Side by side

AVI-8 Flyboy Airmaster GMT AutomaticvsSeiko Diamond Collection

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
Diamond Collection
SeikoDiamond Collection
MSRP $525

At a glance

9 of 29 specs differ
Diameter
Flyboy Airmaster GMT Automatic40mm
Diamond Collection32mm
Power Reserve
Flyboy Airmaster GMT Automatic40h
Diamond Collection40h
Water Resistance
Flyboy Airmaster GMT Automatic50m
Diamond Collection100m
MSRP
Flyboy Airmaster GMT Automatic$365
Diamond Collection$525

Full specifications

Case

7 specs
Category
GMT
Dress
Diameter
40mm
32mm
Thickness
8.2mm
Lug-to-Lug
39mm
Lug Width
15mm
Material
316L Stainless Steel
Stainless Steel
Water Resistance
50m
100m

Movement

1 specs
Caliber
NH34
6N32

Pricing

1 specs
MSRP
$365
$525

Follow this matchup

Get a note when AVI-8 Flyboy Airmaster GMT Automatic vs Seiko Diamond Collection gets more votes, a community discussion, or a price drop. No account needed.

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.

Seiko Diamond Collection

Owners widely praise the Seiko Diamond Collection for its stunning beauty, particularly highlighting the 14 diamonds and the captivating mother-of-pearl dial. Its 33.2mm case size, 100m water resistance, sapphire crystal, and lightweight build are appreciated features contributing to comfortable wear. Some owners find the dial detail is best appreciated in direct sunlight. The gold plating on some models may show fading from desk work over time. Overall, owners rate the Seiko Diamond Collection highly for its dazzling aesthetics and comfortable, well-finished design at its price point.

Keep exploring

More watches worth a look

Matched to the watches above on size, movement, style and price — microbrands first. Open any one to dig in.

Adjacent matchups

People also compared

Comparisons nearby in the catalog — alternatives to the watches above paired against the matchup.