Side by side

Borealis Watch Co. Porto CovovsGlycine Airman No. 1 GMT

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
Airman No. 1 GMT
GlycineAirman No. 1 GMT
MSRP $2,800

At a glance

17 of 29 specs differ
Diameter
Porto Covo40mm
Airman No. 1 GMT36mm
Power Reserve
Porto Covo40h
Airman No. 1 GMT48h
Water Resistance
Porto Covo300m
Airman No. 1 GMT30m
MSRP
Porto Covo$415
Airman No. 1 GMT$2,800

Full specifications

Case

8 specs
Category
Diver
GMT
Diameter
40mm
36mm
Thickness
11.6mm
11.6mm
Lug-to-Lug
42.5mm
Lug Width
20mm
20mm
Finish
Brushed and polished
Water Resistance
300m
30m
Caseback
Solid

Crystal & Dial

5 specs
Crystal Shape
Flat
AR Coating
Inner
Dial Color
Black
Silver
Indices
Applied
Lume
BGW9
Luminous

Movement

3 specs
Caliber
Miyota 9039
SW330-2
Power Reserve
40h
48h
Complications
None
GMT, Date

Pricing

1 specs
MSRP
$415
$2,800

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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.

Glycine Airman No. 1 GMT

Owners widely praise the Glycine Airman No. 1 GMT for its historical significance and attractive dial. However, some find the 36mm case size to be a bit small, and the GMT hand can be difficult to distinguish from the minute hand. The watch has a very limited 3ATM water resistance. Later versions feature sapphire crystals, differing from earlier plexi models. Overall, owners value the Glycine Airman No. 1 GMT for its historical appeal and dial design, despite minor legibility and sizing concerns.

From video reviewers

The case finishing and dial colors are praised. The value proposition is tied to a sale price, with questions about long-term competitiveness.

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