====== Rudis Sylva RS10 ====== {{wst>image_cr|Rudis Sylva|RS10}} {{wst>image_cr|Rudis Sylva|Harmonious Oscillator}} The **RS10 Harmonious Oscillator** is a wristwatch by [[Rudis Sylva]]. The brand Rudis Sylva caused a sensation at the [[BaselWorld]] [[2009]] with the presentation of a Harmonious Oscillator model, a very beautiful and technically challenging innovation. Since then a range of watches with this invention were launched, so this model. **Reference:** * RS10 **Movement:** * [[Manual winding]] [[manufacture movement]], 21.600 A/h * Harmonious Oscillator: 2 connected Balance springs on 1 escapement * Finishing: * Main plate: bevelling, pyramid guilloche work * Hand-decorated bridges: bevelling, circular graining, drawing * Gear train: circular graining, diamond-polished corners * Screws: machine threading with controlled undercut * Barrel drum: snailed * Titanium cage bridge bevelling: 28 inward corners, drawing, 30 hours’ work * Power reserve 70 hours **Case:** * Pink or Grey Gold * Ø 44 mm, H 14.3 mm * [[Sapphire crystal]] * Screwed caseback with sun dial decoration: hand-engraved with [[grand feu]] [[enamel]] **Dial:** * Grained, opaline or matt black **Functions:** * Hour, minute, seconds **Bracelet:** * Alligator leather strap, [[tang-type buckle]] {{tag>Watch_models Watches_with_tourbillon Rudis_Sylva_models}}