Rolex 4160

The Rolex cal. 4160 is an automatic movement introduced in 2007 as the brand's first in-house regatta chronograph. It powers the Yacht-Master II, featuring a programmable countdown function designed for sailing starts. The movement belongs to Rolex's 41xx caliber family and is entirely in-house, reflecting the manufacturer's push toward vertical integration. Production has ceased, replaced by newer generations of the Yacht-Master II's internal chronograph caliber.