The "Junkers J1" Exclusive Version is dedicated to an plane that took to your skies just once and yet represented a revolution. Strictly limited to 1915 pieces. It includes a chrome steel case having a scratch-resistant sapphire crystal. It’s a hand-winding mechanical motion with 42 hrs of power. Georges Favre-Jacot https://www.watchesworld.com/germanys-top-10-favourite-luxury-watches/