The Zenith Defy Double Tourbillon reference 04.9000.9020/00.R920 is a limited edition of 10 pieces introduced in 2021. This watch has a sapphire crystal case holding the caliber El Primero 9020 with 1/100th of a second chronograph with a 60-second tourbillon driving the time and a 6-second tourbillon driving the chronograph in a special “starry sky” movement decoration.
