The "Junkers J1" Unique Edition is devoted to an airplane that took for the skies only once and but represented a revolution. Strictly restricted to 1915 items. It features a chrome steel circumstance by using a scratch-resistant sapphire crystal. It’s a hand-winding mechanical motion with 42 hours of electrical power. https://www.watchesworld.com/germanys-top-10-favourite-luxury-watches/