First introduced in 1971, the replica Rolex Explorer II was designed for cave explorers. It did not replace the classic Explorer series that had been around since 1953 but rather complemented it. The Explorer II’s design incorporated a date display and an additional 24-hour hand, providing an accurate reference of day and night time even in total darkness, such as deep underground. Produced between 2011 and 2021, the Explorer II 216570 is a 42mm stainless steel sports watch with a …