A Lange & Sohne are known for their legendary high levels of fine watchmaking. At the pinnacle of this after the Tourbillon would be the Dateograph and then their Perpetual Calendar . The time has now come when all three of these complications merge into one NEW watch known as the Datograph Perpetual Tourbillon.
For the watchmakers, integrating this popular mechanism into this exclusive timepiece was a much more challenging task than might be expected. That is because the 729-part caliber L952.2 movement was not simply constructed module by module. Instead, A. Lange & Söhne decided on a more elegant but more complicated solution: within the movement, which was rebuilt from scratch, the three complications that give the watch its name were all connected to form an integrated whole.
The chronograph is equipped with a column-wheel mechanism, a precise jumping minute counter and a flyback function. The jumping perpetual calendar is paired with a moon-phase display and a Lange outsize date. And a glance through the sapphire-crystal caseback into the movement hand-decorated in accordance with the highest Lange standards makes it clear how the chronograph mechanism was arranged around the tourbillon. In addition, thanks to the patented stop-seconds mechanism, the balance wheel is momentarily brought to a standstill when the crown is pulled, so that the watch can be set with one-second accuracy.
This watch is limited to 100 pieces for the world. It’s 41.5mm and the case is maid out of platinum. Functions include; Hours and minutes; subsidiary-seconds dial; tourbillon with patented stop seconds; flyback chronograph with precisely jumping minute counter; tachymeter scale; perpetual calendar with outsize date, day of week, month, and leap year; day/night indicator; moon-phase display; power-reserve indication.This watch is a manual wind watch and has a 50 hour power reserve when fully wound. The dial is black which plays nicely of the platinum case but I would have preferred it to be in the A Lange & Sohne iconic grey dial.
Once again this an amazing accomplishment for A Lange & Sohne and it just proves their commitment to excellence no matter how complicated!