Side by side

AVI-8 Flyboy Airmaster GMT AutomaticvsBremont Supermarine 300M

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
Supermarine 300M
BremontSupermarine 300M
MSRP $3,550

At a glance

8 of 29 specs differ
Diameter
Flyboy Airmaster GMT Automatic40mm
Supermarine 300M40mm
Power Reserve
Flyboy Airmaster GMT Automatic40h
Supermarine 300M40h
Water Resistance
Flyboy Airmaster GMT Automatic50m
Supermarine 300M300m
MSRP
Flyboy Airmaster GMT Automatic$365
Supermarine 300M$3,550

Full specifications

Case

5 specs
Category
GMT
Diver
Thickness
12mm
Lug Width
20mm
Material
316L Stainless Steel
904L Stainless Steel
Water Resistance
50m
300m

Crystal & Dial

1 specs
Dial Color
Black
Green

Movement

1 specs
Caliber
NH34
BE-92AE

Pricing

1 specs
MSRP
$365
$3,550

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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.

Bremont Supermarine 300M

The Bremont Supermarine 300M is praised for its comfortable 40mm and 42mm case sizes, with owners noting the 42mm wears well on smaller wrists due to its lug design. One owner highlights the 13mm thinness of the 40mm case, considered compact for a 300m diver. The watch is priced at $1375. On balance, owners and reviewers appreciate the Bremont Supermarine 300M for its wearability and compact dimensions, especially for a dive watch.

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