Side by side

Borealis Watch Co. Porto CovovsCitizen Promaster Sikorsky

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
Promaster Sikorsky
CitizenPromaster Sikorsky
MSRP $469

At a glance

12 of 29 specs differ
Diameter
Porto Covo40mm
Promaster Sikorsky42.4mm
Power Reserve
Porto Covo40h
Promaster Sikorsky40h
Water Resistance
Porto Covo300m
Promaster Sikorsky200m
MSRP
Porto Covo$415
Promaster Sikorsky$469

Full specifications

Case

6 specs
Category
Diver
Pilot
Diameter
40mm
42.4mm
Thickness
11.6mm
12mm
Lug-to-Lug
42.5mm
46mm
Lug Width
20mm
22mm
Water Resistance
300m
200m

Crystal & Dial

3 specs
Crystal
Sapphire
Mineral
Dial Color
Black
Grey
Lume
BGW9
None

Movement

2 specs
Caliber
Miyota 9039
B877
Type
Automatic
Solar

Pricing

1 specs
MSRP
$415
$469

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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.

Citizen Promaster Sikorsky

The Citizen Promaster Sikorsky is a large 46mm watch honoring the S-92 helicopter, featuring a busy dial with red, white, blue, and yellow accents, and helicopter blade-shaped hands. It houses a solar-powered U680 movement with atomic time syncing. On balance, owners find the Citizen Promaster Sikorsky to be a unique, albeit cluttered, limited edition timepiece.

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