3155

Calibre 3155 is a self-winding mechanical movement entirely designed and manufactured by Rolex, featuring a day and date display. Like all Rolex Perpetual movements, the 3155 is a certified Swiss chronometer, a distinction for high-precision watches that have passed the Swiss Official Chronometer Testing Institute (COSC) tests, and its Oyster architecture ensures exceptional reliability. Introduced in 1988, the 3155 measures 6.00mm in thickness and contains 31 jewels. (Chronometer)