Rolex 3131

	Brand:	Rolex
	Family:	Rolex Parachrom Family
	Height:
	Jewels:
	Reserve:	48 hours
	Frequency:	28,800 A/h
	Winding:	Automatic, Bi-Directional Automatic Winding, Central Rotor Automatic Winding
	Diameter:	(12.5 ligne)
Rolex Cal. 3131 © Rolex	Complications:	Hacking Seconds, Hand Winding
	Hands:	Central Hour Hand, Central Minute Hand, Central Seconds Hand

Distinguishing Technical Characteristics
Central-Rotor Automatic Balance Bridge Microstella Balance Balance Balance at 6:00 Central Rotor
Production: 2007 – Current
1910s	1920s	1930s	1940s	1950s	1960s	1970s	1980s	1990s	2000s	2010s	2020s

Cal. 3131 is an anti-magnetic automatic movement produced by Rolex since 2007. It is based on the original Cal. 3130, dating back to 1988, and lacks modern advancements like Paraflex anti-shock, though it does have a Parachrom hairspring. It is likely that Rolex will replace this movement with the new “Chronergy” design in the coming years.

• 2016-present Rolex Air-King, Ref. 116900
• Rolex Milgauss, Ref. 116400