Built for the Unknown The Explorer II is a tool watch designed for adventurers and professionals who operate in extreme environments. With its fixed 24-hour bezel and dual-time functionality, its ideal for navigating through caves, polar regions or anywhere the sun doesnt rise or set. Ready for Every Expedition This Rolex Certified Pre-Owned Explorer II, reference 216570, features a 42mm Oystersteel case and black dial with bold hour markers and an orange 24-hour hand. Powered by the calibre 3187 automatic movement, it offers a 48-hour power reserve. The Easylink Oysterlock clasp ensures a secure and comfortable fit for every journey.