Our race to flatness forced us to rethink the winding mechanism and eliminate the winding stem, whose minimum diameter of 1.5 millimetres precluded its inclusion in such a slim watch. In its place, a crown for the function selection and another to utilise the selected function, have both been integrated in the case. An additional challenge consisted in ensuring their necessary water resistance. This called for R&D as strenuous as that of the movement itself. #RichardMille #Ferrari #rmup01 @ferrari 📸 @philippelouzon