LANGE 31

SAXONIA

LANGE 31 reference 130.039

POWER RESERVE: 744 HOURS

The LANGE 31 is the world’s first mechanical wristwatch with a power reserve of 31 days and a patented constant-force escapement. To deliver a power reserve of this magnitude, the movement must be able to store a large amount of energy. This task is handled by two mainsprings that are both 1850 millimetres long – about ten times as long as in mechanical wristwatches with a conventional power reserve.

Close-up of movement L034.1 of the LANGE 31

MOVEMENT L034.1

Mainsprings of this length imposed considerable challenges on the engineers. The first obstacle was to transmit their tremendous energy to the movement in a gentle and uniform manner. For this purpose, they developed a patented constant-force escapement. The second challenge presents itself when winding the watch, a very time-consuming and cumbersome task, given the length of the springs. This is why the LANGE 31 is wound with a key. It generates much more leverage than a winding mechanism based on a crown.

Movement L034.1 of the LANGE 31
THE SAXONIA FAMILY

THE SAXONIA FAMILY

THE BEST MECHANICAL SOLUTION

The development of a SAXONIA starts with the movement. Mechanical essence is the main objective.

DISCOVER A. LANGE & SÖHNE TIMEPIECES

Crafted by hand in Glashütte, Germany.