The Tourbograph Perpetual “Pour le Mérite” is a split-second chronograph perpetual calendar, and tourbillon this quartet of complications makes it the most complicated watch in the Lange collection it also has a fusée and chain constant force transmission system.
The movement is comprised of a mind-boggling 684 components which makes it larger than the original and makes the case about 43mm in diameter and 16.6mm hieght.
When you notice the movement the L133.1 that works inside the Tourbograph Perpetual “Pour le Mérite” it is a delicately linked mechanism that overcomes the pull of gravity. Beating at 21,600 vibrations per hour with 36 hours of power reserve when fully wound and is nearly identical from the back, with most of the changes have been done under the dial, where the perpetual calendar mechanism had to be installed in a narrow space.
Limited edition of only 50 platinum cased watches to be produced.