Side by side

Borealis Watch Co. Porto CovovsHamilton Khaki Aviation Khaki Pilot Pioneer Auto Chrono

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

At a glance

11 of 29 specs differ
Diameter
Porto Covo40mm
Khaki Aviation Khaki Pilot Pioneer Auto Chrono41mm
Power Reserve
Porto Covo40h
Khaki Aviation Khaki Pilot Pioneer Auto Chrono60h
Water Resistance
Porto Covo300m
Khaki Aviation Khaki Pilot Pioneer Auto Chrono100m
MSRP
Porto Covo$415
Khaki Aviation Khaki Pilot Pioneer Auto Chrono$1,995

Full specifications

Case

6 specs
Category
Diver
Chronograph
Diameter
40mm
41mm
Thickness
11.6mm
16mm
Lug-to-Lug
42.5mm
46mm
Lug Width
20mm
22mm
Water Resistance
300m
100m

Crystal & Dial

2 specs
Dial Color
Black
Beige
Lume
BGW9
None

Movement

2 specs
Caliber
Miyota 9039
H-31
Power Reserve
40h
60h

Pricing

1 specs
MSRP
$415
$1,995

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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 Khaki Pilot Pioneer Auto Chrono

Owners widely praise the Hamilton Khaki Aviation Khaki Pilot Pioneer Auto Chrono for its excellent dial legibility and unique, vintage-inspired design, with some noting its thinness and 72-hour power reserve. Reviewers highlight its charismatic, function-forward military aesthetic and attractive dial execution. The watch is considered a wise starting point for a chronograph under $2,000, with observed accuracy around +/- 4 seconds per day and a 60-hour power reserve. Some owners find the non-screw-down crown limits water confidence, and one reviewer notes the mineral crystal scratches more easily than sapphire. The price is considered a bit punchy by one source. On balance, owners and reviewers rate the Hamilton Khaki Aviation Khaki Pilot Pioneer Auto Chrono highly for its handsome, utilitarian design and value.

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