This exceptional ultra-flat and skeletonized tourbillon is an astonishing piece and a homage to high horology and contemporary design alike. It features an openwork Graff Icon patterned dial which reveals the exquisite construction of the innovative in-house calibre 4. Given that the watch overall measures only 7.20 mm in thickness, the movement has to play the part and is ultra-thin, measuring only 3.5 mm in height. Besides the highly complicated tourbillon, it encompasses an impressive power reserve of 60 hours.