Despite embracing a new means of powering its latest watch, purists can be rest assured that Grönefeld's exalted standards of finish prevail. The stainless-steel bridges replicate the facades of the Dutch houses, termed 'bell gables'. They are hand-bevelled, evincing a brilliant gleam. The centres deliver a sublime contrast with their micro-blasted surfaces and are adorned with relief engraving.

The cage of the flying tourbillon, a tourbillon without an upper bridge, is made of stainless steel. The Horological Brothers use stainless steel for the cage and the aforementioned bridges because it is not liable to corrosion and, as such, proffers lasting benefits to the owner. Working with stainless steel requires great patience, but Bart and Tim believe the end result substantiates the time expended.

The 5-arm, double spoke gear train wheels exhibit a contemporary character with their circular grained surfaces paying due reverence to fine watchmaking tradition. The movement includes a balance wheel with white gold timing screws and is equipped with a free-sprung over-coil hairspring with triangular stud.

Gold chatons stand testament to the no-compromise specification of this movement. In addition, the mirror polished screws feature chamfered rims and slots. Numerous surfaces gleam, courtesy of the mirror-polishing which has been patiently executed by time-served hands. The inventory of different decorations includes snailed, grained, spotted and frosted surfaces, indulging the desires of purists.

Details make perfection and perfection is not a detail. Leonardo da Vinci