Side by side

Borealis Watch Co. Porto CovovsRZE Fortitude 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
Fortitude GMT
RZEFortitude GMT
MSRP $719

At a glance

13 of 29 specs differ
Diameter
Porto Covo40mm
Fortitude GMT41mm
Power Reserve
Porto Covo40h
Fortitude GMT40h
Water Resistance
Porto Covo300m
Fortitude GMT200m
MSRP
Porto Covo$415
Fortitude GMT$719

Full specifications

Case

7 specs
Category
Diver
GMT
Diameter
40mm
41mm
Thickness
11.6mm
12mm
Lug-to-Lug
42.5mm
47mm
Lug Width
20mm
20mm
Material
Stainless Steel
Grade 5 Titanium
Water Resistance
300m
200m

Crystal & Dial

3 specs
AR Coating
Inner
Underside
Dial Color
Black
Red
Lume
BGW9
Super-LumiNova BGW9

Movement

2 specs
Caliber
Miyota 9039
Miyota 9075
Complications
None
GMT

Pricing

1 specs
MSRP
$415
$719

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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.

RZE Fortitude GMT

The RZE Fortitude GMT is widely praised for its lightweight titanium construction and durable UltraHex coating, offering exceptional value under $700. Owners and reviewers highlight its comfortable wearability, with a bracelet featuring a quick-adjust clasp and multiple micro-adjustment positions. The Miyota 9075 flyer GMT movement is noted for its accuracy, with one owner reporting -1 to +1 seconds per day, though another source states a range of -10/+30 seconds per day. The watch's design is appreciated for its soul and attention to detail, including a subtle red crown tube indicator and faceted lugs, and its Nimbus Grey dial features a coarse, sandpaper-like texture and fumé effect. A reviewer points out the rotor can be loud and a smaller screwdriver is needed for sizing, while an owner found the GMT hand lume confusing. Overall, owners and reviewers rate the RZE Fortitude GMT highly for its comfortable titanium build, durable coating, and excellent value.

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