spadddd

I'm interested in buying a Speedmaster automatic day/date rep. Several of the big sites offer what seems to be the same watch powered by the "Asia 7751" Valjoux clone. Does anyone know if this is a 28.8k movement or do all these auto day/date reps still use the 21.6k? For $300+ I certainly don't want a 21.6k movement. Here's an example of what I'm looking at: Speedmaster day/date from watcheden