A. Lange & Söhne Langematik Perpetual

The LANGEMATIK PERPETUAL was the first mechanical wristwatch to combine a perpetual calendar with the Lange outsize date. It differs from other calendar timepieces with small but subtle features such as the ZERO-RESET mechanism and a main corrector for simultaneously advancing all calendar displays. On the occasion of its 20th birthday, it now comes in white gold or pink gold, both combined with a blue dial, each in a 50-watch limited edition.