The Swiss watchmaker De Bethune is honored in Assouline's newest book. De Bethune: The Art of Watchmaking, published to commemorate the company's 20th anniversary, delves into the intricate workings of the atelier run by renowned watchmaker and co-founder Denis Flageollet. The brand specializes in creating both impossibly contemporary and technologically sophisticated clocks, blurring the limits between conventional workmanship and modern design. De Bethune is one of the rarest and most expensive watch brands in the world, as the book emphasizes. The brand has been able to create the most sophisticated and cutting-edge timepieces imaginable with extensible designs and cutting-edge materials thanks to limited manufacturing, maintaining a close relationship with its consumers.