Girard-Perregaux Minute Repeater Tri-Axial Tourbillon Earth to Sky Edition

The Girard-Perregaux Minute Repeater Tri-Axial Tourbillon Earth to Sky Edition, reference 99830-52-001-BA6A, has a 48 mm pink gold case. A minute repeater and a tri-axial tourbillon are visible on the dial side, including the gongs and hammers. The case measures 21.24 mm thick and carries a water-resistance rating of 30 metres. Manual-winding calibre GP09560 has 54 jewels and a power reserve of 64 hours. Its frequency is 21,600 vibrations per hour (3 Hz), with the mechanism visible through sapphire front glass. An anti-reflective sapphire box crystal forms the display back. This is a limited edition of 18 pieces, fitted with a black alligator leather strap and a pink gold triple folding clasp.