Side by side

Borealis Watch Co. Porto CovovsGlycine Airman 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 GMT
GlycineAirman GMT
MSRP $2,950

At a glance

16 of 29 specs differ
Diameter
Porto Covo40mm
Airman GMT46mm
Power Reserve
Porto Covo40h
Airman GMT48h
Water Resistance
Porto Covo300m
Airman GMT100m
MSRP
Porto Covo$415
Airman GMT$2,950

Full specifications

Case

8 specs
Category
Diver
GMT
Diameter
40mm
46mm
Thickness
11.6mm
12.18mm
Lug-to-Lug
42.5mm
Lug Width
20mm
24mm
Finish
Brushed and polished
Water Resistance
300m
100m
Caseback
Solid

Crystal & Dial

4 specs
Crystal Shape
Flat
AR Coating
Inner
Indices
Applied
Lume
BGW9
Luminous

Movement

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

Pricing

1 specs
MSRP
$415
$2,950

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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 GMT

Owners widely praise the Glycine Airman GMT for its value and classic design, with specific appreciation for its 39mm sizing, 200m water resistance, and beefy signed crowns. Reviewers highlight its faithful re-issue nature, retaining vintage features like the plexiglass crystal and locking friction bezel with a thumbscrew crown, while some owners note its subtle blue degrade dial and red-tipped GMT hand. Accuracy from its Sellita-based automatic movement is described as acceptable, though some owners find the dual 12-hour and 24-hour scales confusing and the slim GMT hand difficult to read. On balance, enthusiasts and reviewers rate the Glycine Airman GMT highly for its vintage charm and robust build at its price point.

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