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Ronda 5040.B

Probable

A commodity Swiss quartz chronograph used across a great many independent brands. Its presence in a watch is a specification fact rather than an identifying one — the same caliber sits in hundreds of unrelated watches, so it can confirm that a watch matches its catalogued specification and can never identify the watch.

Specifications

Movement manufacturer
Ronda
Winding
quartz
Complications
Chronograph · Date · Small seconds

Architecture

Swiss quartz chronograph with three sub-registers and a date, from Ronda's Startech chronograph family. Chronograph to 30 minutes with a small seconds register.

Service practice

Ronda quartz calibers are generally replaced rather than repaired at service, and a replacement is a like-for-like commodity part. A serviced watch carrying a later Ronda module of the same family is normal practice and is not an originality concern of the kind a mechanical movement swap would be.

References using this caliber

Provenance of this record

Sources & Evidence

Primary sourceTechnical documentation

Ronda AG — caliber technical data sheets

Ronda AG, Lausen

Accessed
2026-08-18

Cited for

This referenceHigh confidence
View source ↗
Primary sourceManufacturer documentation

TSIKOLIA — manufacturer store and product specifications

TSIKOLIA (Zviad Tsikolia), Tbilisi

Accessed
2026-08-18

Cited for

This referenceProbable
View source ↗

Last verified: Not yet reviewed