MB&F caliber SP One

SP One movement developed in-house by MB&F, featuring signature balance wheel and inclined time dial. Manual winding mainspring barrel 72 hours power reserve Superlative hand finishing; internal bevel angles highlighting handcraft; polished bevels; hand-made engravings, anthracite bridges (ruthenium finish). Black DLC inclined dial Balance frequency: 2.5Hz (18,000 vph) Number of components: 191 Number of jewels: 31