The third A. Lange & Söhne wristwatch with a fusée-and-chain transmission continues the tradition of observation watches that are fully focused on precise time measurement. This horological rarity with its three-part enamel dial has famous historic forebears.The fuséeand- chain transmission compensates for the declining spring force, keeping the effective torque constant across the entire power-reserve period.

For this purpose, the drive function, usually handled by the mainspring barrel alone, is split into two components: the mainspring barrel and the adjacent taped fusée.The two components are connected by a dainty chain which in the case of the RICHARD LANGE “Pour le Mérite” consists of 636 individual parts.