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Home/Browse/Serica/Ref. 5303 Diving Chronometer
Serica Ref. 5303 Diving Chronometer — Enamel Black
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Serica Ref. 5303 Diving Chronometer

DiverMicrobrand

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.

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Ref. 5303 Diving Chronometer
Ref. 5303 Diving Chronometer
Ref. 5330 Diving Chronometer Date
3 Variants
Lume:Super-LumiNova
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$1,768
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Alternatives
Case
39mm
Power Reserve
42h
Movement
Automatic
Water Resistance
300m
Crystal
Sapphire + AR
01

Case Dimensions

Diameter39mm
Thickness12.2mm
Lug-to-Lug46.5mm
Lug Width—
02

Case Build

MaterialStainless Steel
Water Resistance300m
03

Crystal & Dial

CrystalSapphire
AR CoatingYes
Dial ColorEnamel Black
LumeSuper-LumiNova
04

Movement

Caliber
M100 COSC
TypeAutomatic
Beat Rate—
Power Reserve42 hours
Jewels—
HackingNo
Hand-WindingNo
ComplicationsCOSC
05

Design Language

Dial styleMatte
BezelRotating (dive)
Bracelet / strapLug-attached bracelet
HandsMercedes
AI-detected from product image · 5/22/2026
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