A Lange & Sohne Langematik Perpetual Calendar. When the langematik perpetual was launched in 2001, it was the first mechanical wristwatch that combined a perpetual calendar with a lange outsize date. Thanks to the specially developed peripheral month ring, it was possible to incorporate the calendar while preserving the prominent design of.

Lange & söhne grand langematik date rose gold, referans numarası 309.031; When the langematik perpetual was launched in 2001, it was the first mechanical wristwatch that combined a perpetual calendar with a lange outsize date.