The first two house the caliber 3230, an automatic movement equipped https://www.fabrikuhren.de https://www.fabrikuhren.de with the Chronergy escapement that delivers 70 hours https://www.popuhren.de.com/produkt-Sammlungen/iwc/ replica iwc uhren of power reserve, while https://www.orologidilusso.it.com/Collezione/richard-mille/ https://www.orologidilusso.it.com/Collezione/richard-mille/ the latter houses the caliber 2232 providing 55 hours of energy autonomy when fully wound.