This particular product can be used for both series 9 machines, not just the 9 pro. It is a better upgrade compared to the previous replacement, it cuts much better.

It goes without saying that it cuts very well, but I don't see any significant difference from the previous one I had (the original s9 model). However, it is a newer model and the reviews say that it is better. Perhaps the difference is small and may not be noticeable to all types of users.

Improved compared to previous ones, especially the first ones. It's not worth switching to 9pro, change the shaving head instead!

Very good replacement for the S-9 Braun machine. I believe it is better than the original one that was available when purchasing the machine.