The patented zero-reset
With the ZERO-RESET mechanism, the movement stops and the seconds hand jumps to zero when the crown is pulled. This allows the watch to be accurately synchronised.
The mechanism consists of a complex lever system that presses a zero-reset lever against a heart-shaped cam. The seconds hand is attached to the same arbor on which the heart cam rotates. When the heart cam is pivoted into its initial position by the zero-reset lever, this also causes the seconds hand to jump to zero. Pushing the crown home again instantly restarts the movement and with it the seconds hand.
In a modified, even more complex form, this mechanism can also be found in the 1815 TOURBILLON except that here, the tourbillon must be stopped instead of the balance.
Complications
![Grand complications](https://img.alange-soehne.com/page-push-responsive-1/18b7e4d9dc4b989c0cbb36baaf5029cd19d4c9c4.jpg)
![Outsize date](https://img.alange-soehne.com/page-push-responsive-1/40101c864e7d51f4f2e0a5f743a23ade4806a009.jpg)
![Chronograph](https://img.alange-soehne.com/page-push-responsive-1/643270d404e7c6e0b5969d5cff93ab5262fb1d5f.jpg)
Explore further
![Tourbillon watches](https://img.alange-soehne.com/page-push-responsive-1/5751005cf3c3bfc896e9319b1fd3d8dbce50ab44.jpg)
![Jumping seconds mechanism](https://img.alange-soehne.com/page-push-responsive-1/d91a15b6dbd799a1716d4ec33102221c75169c82.jpg)
![Finishing and engraving](https://img.alange-soehne.com/page-push-responsive-1/888200dda1b4e5423e9159d6cb214fe56fb95881.jpg)
![](https://img.alange-soehne.com/fifty-fifty-2/6d22dab3f4f4e79d3bdef6b8100b0a9f05165d55.jpg)
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