The Big Bang Unico Titanium Rainbow dazzles in a 42 mm satin-polished titanium case set with 170 coloured gems and an 18 kt white gold baguette-cut bezel. Powered by the HUB1280 Unico automatic flyback chronograph, 72 h reserve, on black rubber–multicolour alligator strap. Reference: 441.NX.1117.LR.0999