Side by side

AVI-8 Spitfire Lock ChronographvsBorealis Watch Co. Estoril 300 GMT

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

Spitfire Lock Chronograph
AVI-8Spitfire Lock Chronograph
MSRP $260
Estoril 300 GMT
Borealis Watch Co.Estoril 300 GMT
MSRP $600

At a glance

13 of 29 specs differ
Diameter
Spitfire Lock Chronograph42mm
Estoril 300 GMT41.50mm
Power Reserve
Spitfire Lock Chronograph40h
Estoril 300 GMT40h
Water Resistance
Spitfire Lock Chronograph50m
Estoril 300 GMT300m
MSRP
Spitfire Lock Chronograph$260
Estoril 300 GMT$600

Full specifications

Case

7 specs
Category
Chronograph
Diver
Diameter
42mm
41.50mm
Thickness
12mm
13.5mm
Lug-to-Lug
50mm
47mm
Lug Width
22mm
20mm
Material
316L Stainless Steel
Stainless Steel
Water Resistance
50m
300m

Crystal & Dial

3 specs
Crystal
Mineral
Sapphire
Dial Color
MIDNIGHT OAK
Black
Lume
None
BGW9

Movement

2 specs
Caliber
Miyota 9075
Type
Quartz
Automatic

Pricing

1 specs
MSRP
$260
$600

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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 Spitfire Lock Chronograph

Owners widely report AVI-8 watches offer a compelling design and are decently well made for the price. The AVI-8 Spitfire Lock Chronograph features a 42mm stainless steel case with curved lugs, a bi-compax meca-quartz movement, and a mineral crystal, with design elements inspired by Supermarine Spitfires. One owner notes that AVI-8 watches are "something different" and "decently well made," though not of "insane quality." On balance, owners and reviewers appreciate the AVI-8 Spitfire Lock Chronograph for its unique design and value proposition.

Borealis Watch Co. Estoril 300 GMT

Owners widely praise the Borealis Watch Co. Estoril 300 GMT for its excellent value, robust build quality, and crisp dial, with reviewers highlighting its exceptionally bright BGW9 lume and dive-ready ceramic bezel. Some owners appreciate the brushed and polished finishes, though one owner noted a desire for a white-painted second hand. The included NATO strap is considered too thick with a loose weave, and the sapphire bezel insert is seen by some as a minor aesthetic departure from its inspirations. Overall, owners rate the Borealis Watch Co. Estoril 300 GMT highly for its impressive build quality and value.

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