A. Lange & Söhne Lange 1 Tourbillon Perpetual Calendar 720.032FE Rose Gold Silver Dial (2026)

The Lange 1 Tourbillon Perpetual Calendar 720.032FE is, in A. Lange & Söhne's words, the most complex member of the Lange 1 family, combining a tourbillon with a perpetual calendar inside the asymmetric Lange 1 layout. Introduced in 2012, the model keeps its tourbillon out of sight on the dial side; it is revealed only through the sapphire caseback. This Rose Gold version with a Silver dial has been offered since 2014.

On the Silver dial of solid silver, the month is read from a ring around the edge, alongside Lange's outsize date, a retrograde day of the week and a moon phase with day/night indicator. The self-winding movement turns calendar and tourbillon together, and the calendar needs no correction until 2100. The 41.9 mm Rose Gold case, 12.2 mm high, closes on its alligator strap with a Rose Gold deployant buckle.