Description: Rolex Explorer II ref 226570 Pre-owned Rolex Explorer II ref 226570 (2021) is the famed spelunker’s tool watch in its most current form. Released in 2021, it replaced the previous ref. 216570. It kept the same 42mm case size and the option of a black or white dial, but introduced a few important upgrades to the series. For starters, it has a newer movement, the caliber 3285, with a longer power reserve. Rolex also made a few cosmetic upgrades to the series