Side by side

Serica Ref. 8315 Travel ChronometervsCitizen Promaster Air GMT

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
Promaster Air GMT
CitizenPromaster Air GMT
MSRP $1,195

At a glance

12 of 29 specs differ
Diameter
Ref. 8315 Travel Chronometer39mm
Promaster Air GMT44.5mm
Power Reserve
Ref. 8315 Travel Chronometer42h
Promaster Air GMT50h
Water Resistance
Ref. 8315 Travel Chronometer200m
Promaster Air GMT200m
MSRP
Ref. 8315 Travel Chronometer$2,479
Promaster Air GMT$1,195

Full specifications

Case

5 specs
Category
GMT
Pilot
Diameter
39mm
44.5mm
Thickness
12.3mm
12mm
Lug-to-Lug
46.5mm
46mm
Lug Width
20mm
22mm

Crystal & Dial

3 specs
AR Coating
Yes
Underside
Dial Color
GMT - Enamel Black
Navy
Lume
Super-LumiNova
None

Movement

3 specs
Caliber
SOPROD C125 COSC
9054
Power Reserve
42h
50h
Complications
GMT, COSC
None

Pricing

1 specs
MSRP
$2,479
$1,195

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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.

Citizen Promaster Air GMT

The Citizen Promaster Air GMT is widely praised for its impressive in-house Cal. 9054 automatic GMT movement, excellent case fit and finish, and a high-quality bracelet for its price point. Reviewers highlight its striking anti-reflective domed sapphire crystal, legible dial with large numerals, and long-lasting lume. However, its 44.5mm dimensions are considered unfashionably large, and the case design is described as uninspired. The independent hour jumping is noted as mushy and unable to be set backward, while the unframed 3 o'clock date window and minute track on the rehaut being obscured by case shadows are also flagged as drawbacks. The watch is priced at $1,125 USD and features 200m water resistance and a 50-hour power reserve. On balance, reviewers commend the Citizen Promaster Air GMT for its strong movement and legibility at an affordable price, despite reservations about its case size and some functional aspects of the GMT hand.

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