A. Lange & Söhne Lange 1 Tourbillon Perpetual Calendar 720.038FE White Gold Grey Dial (2026)

In White Gold with a Grey dial, the Lange 1 Tourbillon Perpetual Calendar 720.038FE has been part of the collection since 2016. A. Lange & Söhne describes the watch as the most complex member of the Lange 1 family: a perpetual calendar on the dial, and a tourbillon that reveals itself only through the sapphire caseback. The model was introduced in 2012, the first time Lange fitted a perpetual calendar into the Lange 1.

The Grey dial of solid silver shows the month on a peripheral ring, with Lange's outsize date, the day of the week on a retrograde scale and a moon phase that doubles as a day/night display arranged around the off-center time. Recessed correctors on the White Gold case flank adjust the calendar displays. Inside, a self-winding Lange movement drives both complications, with no calendar correction due before 2100. The 41.9 mm White Gold case is 12.2 mm high, on black alligator with a White Gold deployant buckle.