Extravaganzi

MB&F (Maximilian Busser & Friends) seem to have a thing for dual dials. After the HM1 Watch, HM2 watch and the HM3 Frog watch it’s time to take the Horological Machine (HM) series further. Three years in the making, the MB&F HM4 Thunderbolt is based around the indecently complex HM4.