The highest resolution of the Acer H6510 is 1080p (1920x1080). That's over two times the resolution of a WXGA (1280x800) projector, which is the most common resolution.
A 1080p (1920x1080) native projector resolution is in fact the best resolution across all multimedia projectors of a similar type and age to the H6510.
Across comparable types of projector the worst resolution is SVGA (800x600).
There are a number of other projectors that have a resolution of 1080p (1920x1080) currently available that you might also want to consider including because of it's better review score, the W1070 ($699.00), or the W1300 both from Benq.