Third-Generation
The third-generation calibres in the 3000 family add Parachrom anti-magnetic hairsprings (later upgraded to Parachrom Blue).
Rolex 3130 - no-date - 2001 - Air-King, Submariner, Explorer (14000M, 14010M, 14060M, 14203M, 14208M, 114270F, 116000)
Rolex 3131 - antimagnetic - 2007 - Milgauss (116400)
Rolex 3132 - parachrom/paraflex - 2010 - Explorer (214270)
Rolex 3156 - day, date - 2008 - Day-Date II (218206, 218235, 218238, 218239, 2182348, 218398, 218399)
Rolex 3186 - parachrom blue, date, GMT II - 2005 - Explorer II, GMT-Master II (16570, 16710, 116710, 116713, 116718, 116719, 116759)
Rolex 3187 - parachrom blue/paraflex, date, GMT - 2011 - Explorer II (216570)
Fourth-Generation
The fourth generation Calibre 3000 family, introduced in 2015, includes the Chronergy escapement and has a optimized gears and lubricants and a larger mainspring inside a thinner barrel for 70 hour power reserve. Rolex claims that 90% of the components are changed from the previous generation calibres.