HW partners up with talented independent watchmakers not only within the Opus collection. is the perfect example in which the movement was developed by Peter Speake-Marin. 2006, the third version in the Z platform features one of the most beautiful complications in horology – an automatic tourbillon with the frame’s rotation system located within. Project Z3 also has over 110 hours of power reserve. The case is made of Zalium (an alloy that is harder than titanium). 44mm, priced (in 2006) at US$86,500 limited to 50pcs