This is the Defy El Primero Only Watch Edition (Lot 3) that will be auctioned tomorrow – at Only Watch 2017 to support research into curing Muscular Dystrophy – along with 49 other unique timepieces. The watch is equipped with a 1/100th of second chronograph movement and presented in a 44 x 14.50 mm black DLC titanium Defy case with yellow highlights. Additionally, the winning bidder will receive a trip to the Zenith Swiss Watch Manufacture in La Chaux-de-Fonds.