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LANGE 1 family

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.

Anthony de Haas about the GRAND LANGE 1 MOON PHASE "Lumen"

Back of movement L095.4

Movement L095.4

The outsize date consists of a transparent glass units disc with black printed numerals that rotates in front of a luminous background and a tens cross with a white luminous coating and black numerals. Charged by UV light, the display surface of the tens cross also glows even before the date switches. The moon is depicted through two round apertures in the coating of the glass lunar disc, combined with a luminous surface behind it. This timepiece, presented in a limited edition of 200, also features luminous hands and appliques for the time and power-reserve indications.

Explore further

Moon-phase display
Moon-phase display
Most of our moon-phase displays reproduce the moon’s orbit with a precision of 99.998 per cent.
Outsize date
Outsize date
The A. Lange & Söhne outsize date enables a date display with digits around three times as large as those in watches of comparable dimensions.
Power-reserve indicator
Power-reserve indicator
The UP/DOWN display reminds the owner to rewind the watch before it stops running.

How can we be of service?

Whether you are in search of a specific model, have questions out of interest or need a service request for your timepiece – we are delighted to help you. We are at your service by phone, email or in one of our boutiques.

The A. Lange & Söhne salon in Zurich