Harry_Winston_Histoire_de_Tourbillon_3_watch_angle_620x522.jpg

Limited edition 20 pieces

65.9mm x 45.9mm white gold case, caseband and lugs in Zalium (a hard and ultra-light zirconium alloy),manual-wind triple tourbillon movement w/50 hrs power reserve

http://blog.perpetuelle.com/watches/harry-winston-histoire-de-tourbillon-3-watch/