The 1815 Rattrapante Perpetual Calendar melds
the technical fascination of a rattrapante chronograph with the
enduring precision of a perpetual calendar that does not need to be
corrected until the year 2100, and then by only one day.
The meanwhile eighth chronograph calibre
developed by A. Lange & Söhne is yet another manifestation of the
brand’s exceptional competence in this apotheosis of precision
watchmaking. With a rattrapante chronograph, a perpetual calendar, a
moon-phase display, and a power-reserve indicator, it unites more
horological complications than the well-organised dial suggests at first
sight.
