HUBLOT BIG BANG UNICO SAPPHIRE LIMITED EDITION 100EX Reference: 441.JY.4909.RT. Serial number: 44 / 100. Yellow sapphire case. Skeleton dial, highlighted by two counters (seconds, minute totalizer). Self-winding mechanical movement (calibre HUB 1280). Rubber strap on folding clasp in DLC steel, signed. Sapphire crystal. Circa 2022. Diameter: 42 mm. Accompanied by its case and papers. A sapphire wristwatch automatic movement, by Hublot. Circa 2022.