The history of watchmaking tells the story of miniaturisation. Technical geniuses strove to downsize the monumental mechanisms of the gigantic medieval tower clocks. This resulted first in grand long-case clocks, followed by smaller clocks for mantles or tabletops, and later by pocket watches. The holy grail of this ongoing quest for progressively smaller sizes was finally discovered when these mechanical microcosms of gears, wheels and dozens of other tiny parts were installed in ever-smaller cases for the wrist. This task has been an endless source for creativity, with many beautiful examples appearing once again at Baselworld 2018. Timeless refinement distinguishes both the inside and the outside of these eight new ultra-slim style icons, where every fraction of a millimetre counts.