FYI, I believe that there are a number of different "electronic" IWC watches.
I got one for my 21st, around 30 years ago, and it is what is called the "pitchfork" electronic. It has run perfectly since I have had it.
From what I was able to uncover a few years back, this movement was shortlived..for whatever reason, and IWC developed or used a different movement.
The casing on mine is a Yacht Club type.
BTW, you can find out all details of your watch from IWC.
Enjoy it!