Cal. 3135 and 3136

[luchiong]

Ok, I am getting confused.....
The Cal.3135 is the one which Rolex used it on Sub and DSSD for the current production line.
The Cal.3136 is exclusive to the DJ II.

Both of them have Parachrom blue hairspring and Paraflex shock absorber system? And Both have the date function.....so what's the different?

I keep seeing all kinds of article that talks about these two movement.. but what the different is?

Can someone enlighten me? I am getting lost here......