URWERK used the 2018 SIHH for some mega teasing with the first presentation of a very original re-interpretation of the Pendule Sympathique system developed by Breguet a bit more than some 200 years ago. The particularity of this system is the link between what is called a mother clock and a wearable timepiece, but this time using an atomic clock as the reference and a fully in-house developed movement by URWERK. The full package will be unveiled later on this year at Baselworld and I can admit that I saw the prototype and it's just an unbelievable machine!!