Side by side

Serica Ref. 5303 Diving ChronometervsSugess MoonPhase Master S389

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
MoonPhase Master S389
SugessMoonPhase Master S389
MSRP $599

At a glance

15 of 29 specs differ
Diameter
Ref. 5303 Diving Chronometer39mm
MoonPhase Master S38940mm
Power Reserve
Ref. 5303 Diving Chronometer42h
MoonPhase Master S38935h
Water Resistance
Ref. 5303 Diving Chronometer300m
MoonPhase Master S38950m
MSRP
Ref. 5303 Diving Chronometer$1,768
MoonPhase Master S389$599

Full specifications

Case

6 specs
Category
Diver
Chronograph
Diameter
39mm
40mm
Thickness
12.2mm
12mm
Lug-to-Lug
46.5mm
46mm
Water Resistance
300m
50m
Caseback
Solid
Display

Crystal & Dial

3 specs
AR Coating
Yes
Inner
Dial Color
Enamel Black
2 Salmon
Lume
Super-LumiNova
Tritium

Movement

5 specs
Caliber
M100 COSC
Seagull ST19
Type
Automatic
Manual
Beat Rate
28,800 vph
3 vph
Power Reserve
42h
35h
Complications
COSC
GMT, Chronograph, Moonphase, Date

Pricing

1 specs
MSRP
$1,768
$599

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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.

Sugess MoonPhase Master S389

Owners widely praise the Sugess MoonPhase Master S389 for its beautiful dial and glowing moonphase, with some finding it a stunner that exceeds expectations and a bargain for the price. However, reviewers and owners alike flag rotor noise and thickness as potential drawbacks, and one owner reported receiving a defective unit. Accuracy is reported at -6 seconds per day, and while the dial features applied markers and polished hands, the movement finishing is noted as rough under magnification. Overall, owners rate the Sugess MoonPhase Master S389 highly for its aesthetic appeal and value, despite some concerns regarding rotor noise and build quality consistency.

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