Sources
Primary and third-party sources used across this knowledge base.
Every claim on this site traces back to a source. The central register:
Primary sources
| Kind | Source | Used for |
|---|---|---|
| Regulation | Swissness ordinance for watches (Fedlex) | Swiss Made definition |
| Industry body | Federation of the Swiss Watch Industry FH | Designation guidance |
| Manufacturer | Ronda AG | Calibre specifications (5030.D, R150, 715) |
| Registry | Zefix commercial register | Legal entity data |
| Standard | ISO 22810 | Water resistance |
Third-party sources
| Kind | Source | Used for |
|---|---|---|
| Reviews | Trustpilot | Independent ratings |
| Reviews | Google Reviews | Independent ratings |
| Competitor | Helvetic Instruments product pages (fictional) | Comparison data |
Internal sources
Product specifications, pricing and policies come from Arvell's product data
(this demo: data/arvell.json) and are stamped with verification dates on
every page.
Sources: This page is the source register
Last verified: 2026-08-20 · Last updated: 2026-08-20 · Maintained by: Arvell Watches - Brand Knowledge Team
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