GRAND LANGE 1 MOON PHASE "Lumen"
A marvel of physics
Electromagnetic radiation at wavelengths between 100 and 380 nanometres is commonly referred to as ultraviolet light. It is not visible as such to the human eye. It penetrates the semi-transparent dial of the GRAND LANGE 1 MOON PHASE “Lumen” and charges the luminous elements, even those that are not yet exposed. The result: the first Lange watch featuring a luminous moon-phase display and a luminous outsize date.