Side by side

AVI-8 Flyboy Airmaster GMT AutomaticvsBorealis Watch Co. Sintra

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
Sintra
Borealis Watch Co.Sintra
MSRP $650

At a glance

10 of 29 specs differ
Diameter
Flyboy Airmaster GMT Automatic40mm
Sintra41.50mm
Power Reserve
Flyboy Airmaster GMT Automatic40h
Sintra40h
Water Resistance
Flyboy Airmaster GMT Automatic50m
Sintra200m
MSRP
Flyboy Airmaster GMT Automatic$365
Sintra$650

Full specifications

Case

7 specs
Category
GMT
Sport
Diameter
40mm
41.50mm
Thickness
12.95mm
Lug-to-Lug
47.00mm
Lug Width
20mm
Material
316L Stainless Steel
Stainless Steel
Water Resistance
50m
200m

Crystal & Dial

1 specs
Lume
None
BGW9

Movement

1 specs
Caliber
NH34
Miyota 9015

Pricing

1 specs
MSRP
$365
$650

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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.

Borealis Watch Co. Sintra

Borealis Watch Co. Sintra owners widely praise its well-executed design, featuring applied indices and a shimmering blue dial that some prefer over more expensive alternatives. The timepiece is noted for excellent build quality and high-end specifications for its price, including a Miyota 90S5 movement and a premium bracelet. One owner did not purchase due to its size not being 39mm or less, while the 90xx movements are considered reliable and accurate, though some find them noisy. On balance, owners rate the Borealis Watch Co. Sintra highly for its impressive design and build quality at its price point.

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