Side by side

Serica Ref. 8315 Travel ChronometervsOak & Oscar The Jackson Big Eye

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
The Jackson Big Eye
Oak & OscarThe Jackson Big Eye
MSRP $3,150

At a glance

16 of 29 specs differ
Diameter
Ref. 8315 Travel Chronometer39mm
The Jackson Big Eye40mm
Power Reserve
Ref. 8315 Travel Chronometer42h
The Jackson Big Eye60 hoursh
Water Resistance
Ref. 8315 Travel Chronometer200m
The Jackson Big Eye50m
MSRP
Ref. 8315 Travel Chronometer$2,479
The Jackson Big Eye$3,150

Full specifications

Case

6 specs
Category
GMT
Chronograph
Diameter
39mm
40mm
Thickness
12.3mm
14mm
Lug-to-Lug
46.5mm
46.4mm
Finish
Brushed and polished
Brushed
Water Resistance
200m
50m

Crystal & Dial

4 specs
Crystal Shape
Flat
Double-domed
AR Coating
Yes
Underside
Dial Color
GMT - Enamel Black
White
Indices
Applied
Baton

Movement

5 specs
Caliber
SOPROD C125 COSC
Eterna Caliber 39 (Cal. 3907M)
Type
Automatic
Manual
Beat Rate
28,800 vph
4 vph
Power Reserve
42h
60 hoursh
Complications
GMT, COSC
None

Pricing

1 specs
MSRP
$2,479
$3,150

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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.

Oak & Oscar The Jackson Big Eye

Oak & Oscar The Jackson Big Eye is praised for its balanced design and fine details, featuring a prominent "Big Eye" 30-minute sub-register for improved readability, reminiscent of vintage chronographs. It is powered by the Eterna EMC 3907M manual wind movement with a 60-hour power reserve, column wheel, and flyback function, housed in a 40mm stainless steel case. This limited edition of 50 pieces was priced at $3,150 and included two Horween leather straps and a wallet. On balance, reviewers highlight the Jackson Big Eye's enthusiast-spec chronograph function and readable subdial as key strengths.

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