Side by side

Borealis Watch Co. Porto CovovsCitizen Series 8 870

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
Series 8 870
CitizenSeries 8 870
MSRP $1,095

At a glance

12 of 29 specs differ
Diameter
Porto Covo40mm
Series 8 87039mm
Power Reserve
Porto Covo40h
Series 8 87042h
Water Resistance
Porto Covo300m
Series 8 870100m
MSRP
Porto Covo$415
Series 8 870$1,095

Full specifications

Case

6 specs
Category
Diver
Sport
Diameter
40mm
39mm
Thickness
11.6mm
12mm
Lug-to-Lug
42.5mm
46mm
Lug Width
20mm
11mm
Water Resistance
300m
100m

Crystal & Dial

3 specs
AR Coating
Inner
Underside
Dial Color
Black
Green
Lume
BGW9
None

Movement

2 specs
Caliber
Miyota 9039
9051
Power Reserve
40h
42h

Pricing

1 specs
MSRP
$415
$1,095

Follow this matchup

Get a note when Borealis Watch Co. Porto Covo vs Citizen Series 8 870 gets more votes, a community discussion, or a price drop. No account needed.

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 Series 8 870

The Citizen Series 8 870 is praised for its compelling value proposition and modern Japanese design with a sporty edge. Reviewers note its 40mm steel case, glossy dial with applied markers, and the in-house Calibre 0950 automatic movement offering 50 hours of power reserve and enhanced magnetic resistance. The flat sapphire crystal is noted to collect fingerprints, and the solid caseback omits a view of the movement. The limited edition variant features a 40.8mm black DLC-coated case, a carbon fiber dial, and the 0950 movement regulated to -5/+10 seconds per day. Overall, the Citizen Series 8 870 is viewed as a strong offering for its blend of design and features.

Keep exploring

More watches worth a look

Matched to the watches above on size, movement, style and price — microbrands first. Open any one to dig in.

Adjacent matchups

People also compared

Comparisons nearby in the catalog — alternatives to the watches above paired against the matchup.