As others have said above me, I believe the 904L part when I see it and it's just a modified 7750 from the IWC Portuguese that was recently (a while ago actually lol) released. There is literally no function on the other 2 sub dials IIRC. Just a thin, modified 7750.
Although it still has a long way to go, this is a very promising release and I'm looking forward to see if they can really up their Daytona game. It's been a pretty disaster until now. Lol