Patek Philippe Split-Seconds Chronograph Ref. 5370.
Patek Philippe says: As a mechanism that measures intermediate times while continuing to time an ongoing interval, the split-seconds chronograph has long been, for collectors, one of the most coveted among Patek Philippe's specialities. The new Ref. 5370 marks the debut of the CHR 29-535 PS calibre in its purest form, with no additional complications. It also introduces a