Zenith DEFY DOUBLE TOURBILLON 46 mm Blue Dial Sapphire Rubber Strap 04.9000.9020/00.R92

A limited edition of 10 pieces, the DEFY 21 Double Tourbillon Sapphire is crafted in a 46mm transparent sapphire case showing the 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.