A. Lange & Söhne Lange 1 Perpetual Calendar 345.033E Rose Gold Grey Dial (2026)

The Lange 1 Perpetual Calendar 345.033E, launched in April 2021, fits a perpetual calendar into the Lange 1 without disturbing its asymmetric face, thanks to a month ring around the edge of the dial. In Rose Gold with a Grey dial, it is the regular-production version of the model, and its calendar displays switch instantly at midnight, needing no correction until 2100. It was the first Lange 1 perpetual calendar without a tourbillon.

The Grey dial of solid silver carries Rose Gold hands and markers, Lange's outsize date, a retrograde day-of-week scale and a leap-year indication, with the month read from the peripheral ring. A moon phase with integrated day/night indicator completes the Lange calendar. The self-winding movement drives it all inside a 41.9 mm Rose Gold case, 12.1 mm high, worn on alligator with a Rose Gold prong buckle.