Girard-Perregaux Minute Repeater Flying Bridges

The Girard-Perregaux Minute Repeater Flying Bridges, reference 99840-52-2013-5CC, has a 46 mm pink gold case measuring 17.9 mm thick. A minute repeater and a tourbillon with small seconds share the display beneath sapphire front glass. Self-winding calibre GP9530 contains 47 jewels and operates at 21,600 vibrations per hour (3 Hz), with a power reserve of 60 hours. The skeletonised movement has a white gold micro-rotor and hand-polished chamfers. Applied hour-markers contain blue-emitting luminescent material. A black rubber strap with a fabric effect has a pink gold triple folding clasp. The case is rated to 30 metres, with a glare-proofed sapphire box crystal forming the display back.