Side by side

Serica Ref. 5303 Diving ChronometervsOrient Bambino Version 9

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
Bambino Version 9
OrientBambino Version 9
MSRP $410

At a glance

17 of 29 specs differ
Diameter
Ref. 5303 Diving Chronometer39mm
Bambino Version 941.5mm
Power Reserve
Ref. 5303 Diving Chronometer42h
Bambino Version 940h
Water Resistance
Ref. 5303 Diving Chronometer300m
Bambino Version 930m
MSRP
Ref. 5303 Diving Chronometer$1,768
Bambino Version 9$410

Full specifications

Case

7 specs
Category
Diver
Diameter
39mm
41.5mm
Thickness
12.2mm
14.2mm
Lug-to-Lug
46.5mm
47mm
Lug Width
20mm
21mm
Water Resistance
300m
30m
Caseback
Solid
Display

Crystal & Dial

4 specs
Crystal
Sapphire
Mineral
AR Coating
Yes
Inner
Dial Color
Enamel Black
White
Lume
Super-LumiNova
None

Movement

5 specs
Caliber
M100 COSC
F6B24
Beat Rate
28,800 vph
21,600 vph
Power Reserve
42h
40h
Jewels
25
22
Complications
COSC
GMT, Day-date

Pricing

1 specs
MSRP
$1,768
$410

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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. 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.

Orient Bambino Version 9

Owners and reviewers widely praise the Orient Bambino Version 9 for its exceptional value, with dial finishing that rivals much more expensive watches and a high-end feel due to case finishing and a signed crown. The in-house F6222 movement is noted for reliable timekeeping with hacking and hand-winding capabilities, and the 41.5mm case size is considered a comfortable fit for many wrists. However, the mineral crystal is flagged as prone to scratching, and some find the movement noisy and the stock strap to be of lesser quality. On balance, owners and reviewers rate the Orient Bambino Version 9 highly for its impressive dial design and overall value proposition at its price point.

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