Side by side

Borealis Watch Co. Porto CovovsHamilton Khaki Aviation Day Date Auto

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

Porto Covo
Borealis Watch Co.Porto Covo
MSRP $415
Khaki Aviation Day Date Auto
HamiltonKhaki Aviation Day Date Auto
MSRP $1,125

At a glance

10 of 29 specs differ
Diameter
Porto Covo40mm
Khaki Aviation Day Date Auto42mm
Power Reserve
Porto Covo40h
Khaki Aviation Day Date Auto80h
Water Resistance
Porto Covo300m
Khaki Aviation Day Date Auto100m
MSRP
Porto Covo$415
Khaki Aviation Day Date Auto$1,125

Full specifications

Case

6 specs
Category
Diver
Pilot
Diameter
40mm
42mm
Thickness
11.6mm
12.15mm
Lug-to-Lug
42.5mm
46mm
Lug Width
20mm
20mm
Water Resistance
300m
100m

Crystal & Dial

1 specs
Lume
BGW9
None

Movement

2 specs
Caliber
Miyota 9039
H-40
Power Reserve
40h
80h

Pricing

1 specs
MSRP
$415
$1,125

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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.

Borealis Watch Co. Porto Covo

The Borealis Porto Covo is widely praised for its 39mm size and unique cantilevered indices that create a 3D effect and depth. Owners note the indices' floating appearance is a well-executed design. One owner reported poor accuracy and a terse customer service response, while another wished for a 42mm size option. The $395 price is considered reasonable for a microbrand, though some feel it does not compare favorably to AliExpress options. Overall, owners appreciate the Borealis Porto Covo for its distinctive dial design and wearable 39mm case size.

Hamilton Khaki Aviation Day Date Auto

Owners and reviewers widely praise the Hamilton Khaki Aviation Day Date Auto for its handsome, legible dial with raised indices and day/date complications, and its versatile, modern pilot watch design. The fully brushed case and good lume are noted strengths, with one owner finding it wears comfortably on a NATO strap. The H-10 caliber offers an 80-hour power reserve, though its decoration and regulation are less refined. Some find the 42mm size large and the skeletonized hour hand tip visually unappealing, while others note the AR coating is decent but not exceptional. Overall, owners and reviewers rate the Hamilton Khaki Aviation Day Date Auto highly for its practical design and value at its price point.

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