RE: [Demo notebook] Reference notebook: corrections and recurring beginner questions · RWI-30724
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July 29, 2026 at 5:57 pm
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TimingNotes 05569
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Case 23 — Beginner glossary Q&A: complication, caliber, jewel count, power reserve
Jewel count describes bearings used in a movement design; it is not a quality ranking. Compare the documented movement architecture and service support rather than assuming a higher count makes one watch better.