Ronda 4003B
High confidenceThe caliber of the discontinued 42mm Seven — a reference that has already left the manufacturer's store, which makes this record one of the places where the catalog is preserving something no longer published anywhere.
Specifications
- Movement manufacturer
- Ronda
- Winding
- quartz
- Complications
- Centre seconds · Date
Architecture
Swiss quartz three-hand caliber with a date, from Ronda's Powertech family.
References using this caliber
- TSIKOLIA TW7-42-1EB-RFactory
Seven · Whole production
- TSIKOLIA TW7-42-1EB-MFactory
Seven · Whole production
- TSIKOLIA TW7-42-3GL-RFactory
Seven · Whole production
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
Last verified: Not yet reviewed