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Excalibur Spider

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Excalibur Spider ‑ Skeleton automatic RD820SQ caliber ‑ titanium black DLC skeleton case ‑ 45mm ‑ Bi‑material strap ‑ white Pirelli edition. Excalibur Spider is the only timepiece on the market to be 100% skeletonized, from the case to the movement. It is Roger Dubuis’emblematic collection with stated sport aesthetic and the famous Astral skeleton signature. AUTOMATIC RD820SQ SERIES: The automatic movement is highlighted by the astral skeleton structure and the micro‑rotor, offering a spectacular view on the mechanism. Not only aesthetics, the micro‑rotor offers a winding ratio as good as the best single‑direction big oscillating weight.