Günter Blümlein has summed up the peculiarities of the Lange watches - he said: "A Lange watch is a total art work, with a long history, characterized by the passion of the employees for a fine watch, the style of the house, the responsibility for the tradition and, finally, the unique technique and craftsmanship."
The collections are simply called timepieces by A. Lange & Söhne and are divided into families. We speak of Lange 1, Saxonia, Zeitwerk, 1815, Richard Lange, as well as the two special families "watchmaking" as well as "novelties" in which new clockworks are presented or those with special complications.
The calibers produced by Lange & Söhne carry a large L as the initial designation, followed by a four-digit number with a separation point which is preceded by the last number, such as the caliber L901.5, which is installed in the Lange 1 lunar phase.
The process of double mounting at Lange & Söhne is unique. After a clockwork has been completely assembled, it is once again taken apart and cleaned and only then does the second assembly take place. No mistake remains undetected. The traditional Glashütte manufactory stands for quality and is one of the leading manufacturers of fine mechanical watches worldwide.