The original Pallweber pocket watch used a movement with a distinctive forked cock for the third and fourth wheels – the base was one of IWC's so-called "Elgin" movements https://www.aomwatches.is/.
The watch version of the Pallweber which you see here is pretty true to its pocket watch lineage in terms of size; 45mm in diameter, although it's also relatively thin at 12mm.
The movement is, of course, manufactured by IWC; it's the new IWC caliber 94200, running at 28,800 vph, with a quite good 60 hour power reserve (all the more impressive given the energy drain imposed by the jumping time indications). The case is red gold, and the dial is white lacquer; production is limited to 250 pieces world wide.