10. Franck Muller Aeternitas Mega 4 – $2.7 Million
The watchmaking industry has been pushed to its limits by this timepiece, which features a total of 1,483 components and a record-breaking 36 complications. This Franck Muller timepiece utilises a calendar that is on a 1000-year cycle and is renewable to infinity, despite the fact that it contains over a thousand pieces and thirty-two complications. It is also exceptionally long-lasting.