The Acer X111 has a maximum resolution of SVGA (800x600). That's 53% less resolution than a WXGA (1280x800) projector, which is the most frequently found resolution.
This multimedia projector's resolution (SVGA (800x600)) is in fact the worst resolution amongst all 10000:1 contrast ratio data projectors that are a comparable age to the X111.
The best resolution amongst similar types of multimedia projector is 1080p (1920x1080).
If the resolution of this data projector is not high enough for you then you might also want to look at the Acer X1240 (XGA (1024x768)) which also has a higher rating.