
Calibre 3186 is a self-winding mechanical movement fully developed and produced by Rolex. Beyond standard hour, minute, and second displays, it includes a 24-hour hand for tracking a second time zone. As a certified Swiss chronometer, it has successfully completed the testing by the Swiss Official Chronometer Testing Institute (COSC). Featuring a Parachrom hairspring for improved resistance to shocks and thermal changes, its Oyster-based construction ensures outstanding reliability.