During the development of the Grand Lange 1 presented in 2012, the objective was to transpose the face and the harmonious proportions of the Lange 1 to this model which is 2.5 millimetres larger. In this undertaking, the engineers chose an uncommonly complex path: they first designed the optimised arrangement of the displays and then developed a custom movement that accommodated the architecture of the dial down to the very last detail.
Manually wound movement. Platinum case with leather strap. Sapphire case back. Water resistant to 30 m. Size: Diameter 41 mm, height 8.8 mm.