Side by side

Serica Ref. 5303 Diving ChronometervsOak & Oscar The Jackson Big Eye

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

Ref. 5303 Diving Chronometer
SericaRef. 5303 Diving Chronometer
MSRP $1,768
The Jackson Big Eye
Oak & OscarThe Jackson Big Eye
MSRP $3,150

At a glance

16 of 29 specs differ
Diameter
Ref. 5303 Diving Chronometer39mm
The Jackson Big Eye40mm
Power Reserve
Ref. 5303 Diving Chronometer42h
The Jackson Big Eye60 hoursh
Water Resistance
Ref. 5303 Diving Chronometer300m
The Jackson Big Eye50m
MSRP
Ref. 5303 Diving Chronometer$1,768
The Jackson Big Eye$3,150

Full specifications

Case

6 specs
Category
Diver
Chronograph
Diameter
39mm
40mm
Thickness
12.2mm
14mm
Lug-to-Lug
46.5mm
46.4mm
Finish
Brushed and polished
Brushed
Water Resistance
300m
50m

Crystal & Dial

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

Movement

5 specs
Caliber
M100 COSC
Eterna Caliber 39 (Cal. 3907M)
Type
Automatic
Manual
Beat Rate
28,800 vph
4 vph
Power Reserve
42h
60 hoursh
Complications
COSC
None

Pricing

1 specs
MSRP
$1,768
$3,150

Follow this matchup

Get a note when Serica Ref. 5303 Diving Chronometer vs Oak & Oscar The Jackson Big Eye 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.

Serica Ref. 5303 Diving Chronometer

Owners widely praise the Serica Ref. 5303 Diving Chronometer for its excellent wearability, definitive style, and smooth, confident bezel action. The dual scale on the bezel is noted as surprisingly useful, and the crown action, winding, and hacking are reported to work perfectly. One owner describes the Serica 5303-3 as gorgeous and unique, though another notes the crown can appear comically large. On balance, owners rate the Serica Ref. 5303 Diving Chronometer highly for its blend of unique design and robust functionality.

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.

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.