Whats the difference?

[padi56]

Originally Posted by Spacedweller

Hmm....

Dunno....."just" the "Date", maybe?

I believe the movement is a different caliper. Just my 2 cents.

Current Rolex movements Calibre 3155 DAY-DATE ONLY,Calibre 3135 O/P Date, Datejust, Submariner, Sea-Dweller, Yacht-Master.Calibre 3130 Air-King, Submariner non date, Explorer COSC tested but same movement.Calibre 3185 Explorer II, GMT II.Calibre 3186 the new model GMT,Calibre 4030 the Zenith El-Primo modded Daytona.Calibre 4130 in-house movement Daytona, Calibre 4160 Yacht Master II .Ladies OP NON DATE Calibre 2130 /OP Date Calibre 2235, Datejust, Yacht-Master (Lady/Midsize).Now as you can see Rolex uses just 7 Calibre movements for there entire mens Oyster range now,plus two for the lady oyster non sports range.