Side by side

Serica Ref. 8315 Travel ChronometervsBorealis Watch Co. Porto Covo

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

Ref. 8315 Travel Chronometer
SericaRef. 8315 Travel Chronometer
MSRP $2,479
Porto Covo
Borealis Watch Co.Porto Covo
MSRP $415

At a glance

13 of 29 specs differ
Diameter
Ref. 8315 Travel Chronometer39mm
Porto Covo40mm
Power Reserve
Ref. 8315 Travel Chronometer42h
Porto Covo40h
Water Resistance
Ref. 8315 Travel Chronometer200m
Porto Covo300m
MSRP
Ref. 8315 Travel Chronometer$2,479
Porto Covo$415

Full specifications

Case

6 specs
Category
GMT
Diver
Diameter
39mm
40mm
Thickness
12.3mm
11.6mm
Lug-to-Lug
46.5mm
42.5mm
Lug Width
20mm
20mm
Water Resistance
200m
300m

Crystal & Dial

3 specs
AR Coating
Yes
Inner
Dial Color
GMT - Enamel Black
Black
Lume
Super-LumiNova
BGW9

Movement

3 specs
Caliber
SOPROD C125 COSC
Miyota 9039
Power Reserve
42h
40h
Complications
GMT, COSC
None

Pricing

1 specs
MSRP
$2,479
$415

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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.

Serica Ref. 8315 Travel Chronometer

Serica Ref. 8315 Travel Chronometer owners and reviewers praise its neo-vintage aesthetic, comfortable 39mm size, and unique day/night bezel design. Some find the lack of a date function a drawback, and the mirrored 12-hour bezel with AM/PM text is considered less practical than a traditional 24-hour bezel for time zone reading, with the lollipop-style 24-hour hand and asymmetrical bezel design also noted as potentially confusing. The watch is powered by a COSC-certified Soprod C125 movement with a 40-hour power reserve. One owner noted import duties and that the strap's aggressive taper required using the last hole for a proper fit. On balance, Serica Ref. 8315 Travel Chronometer is appreciated for its distinctive design and wearability, though its GMT functionality and bezel design are points of contention for some.

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.

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