Side by side

Serica Ref. 5303 Diving ChronometervsOrient Symphony III

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
Symphony III
OrientSymphony III
MSRP $240

At a glance

19 of 29 specs differ
Diameter
Ref. 5303 Diving Chronometer39mm
Symphony III41.6mm
Power Reserve
Ref. 5303 Diving Chronometer42h
Symphony III40h
Water Resistance
Ref. 5303 Diving Chronometer300m
Symphony III50m
MSRP
Ref. 5303 Diving Chronometer$1,768
Symphony III$240

Full specifications

Case

7 specs
Category
Diver
Dress
Diameter
39mm
41.6mm
Thickness
12.2mm
12.1mm
Lug-to-Lug
46.5mm
49mm
Lug Width
20mm
22mm
Water Resistance
300m
50m
Caseback
Solid
Display

Crystal & Dial

6 specs
Crystal
Sapphire
Mineral
Crystal Shape
Flat
AR Coating
Yes
Dial Color
Enamel Black
Black
Indices
Applied
Lume
Super-LumiNova
None

Movement

5 specs
Caliber
M100 COSC
F6722
Beat Rate
28,800 vph
21,600 vph
Power Reserve
42h
40h
Jewels
25
22
Complications
COSC
Date

Pricing

1 specs
MSRP
$1,768
$240

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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 Symphony III

Owners widely praise the Orient Symphony III for its exceptional value, noting its sub-$150 price tag belies a polished case and classic design with modern overtones that make it appear more expensive. The dial is described as simple, elegant, and effective, and the time-setting action is smooth. However, the included bracelet is flagged as flimsy and squeaky, prompting recommendations for aftermarket straps. Accuracy is a point of concern for some, with one owner reporting sporadic timekeeping ranging from +10 seconds per day to as much as 83 seconds over 48 hours. Overall, owners rate the Orient Symphony III highly for its impressive value and elegant design, despite the noted bracelet and accuracy issues.

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