Olympus SP-570UZ - What is the EVF Resolution Please?

Having trouble finding much info about the EVF in the Olympus
SP-570UZ so wanted to ask here about it.

First, what is the resolution of the EVF? I only see specs for
the 2.7" LCD, but can't seem to confirm what resolution the
Electronic View Finder offers.

Second, how effective is the EVF in this model? Is it crisp and
functional for adjusting focus, etc? Or is it kind of fuzzy /
choppy and you pretty much end up using the 2.7" LCD instead?

Thanks much for any helpful answers.