Lange 1 Tourbillon Perpetual Calendar

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Revolutionizing date indication, the Lange 1 Tourbillon Perpetual Calendar is the first watch with a perpetual calendar in the classic Lange 1 style.  Overhauling the sleek design of the Lange 1, with sophisticated mechanism, the Lange 1 Tourbillon Perpetual Calendar will surely be the talk of any occasion.

Lange 1 Tourbillon Perpetual Calendar

The off-center dial design opens the watch to new styles, freeing space for more intricate displays like the month indication ring and day-of-the-week indications and even leap-year indications! To tackle the difference in duration between each month, the rotating peripheral month ring’s internal gearing was specially made with a circumferential contour with wavy recesses to ensure that each month has its own duration accurately measured.

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Another captivating feature of the Lange 1 Tourbillon Perpetual Calendar is of course the tourbillon. Normally, it is not possible to accurately set a tourbillon watch because of the inability to stop the second’s hand, but for the Lange 1 Tourbillon Perpetual Calendar, this problem has been solved. Lange’s patented construction creates brakes for the balance wheel directly, preserving the potential energy of the balance spring to whilst stopping the second’s hand temporarily to allow the wearer to set the time with fewer restrictions.

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