The WUX400ST supports a maximum resolution of 1920 x 1200 (WUXGA). That's over seven times the resolution of a 640 x 480 (VGA) projector, which is the most common resolution supported by similar spec projectors that have been available for a comparable time to the WUX400ST. 640 x 480 (VGA) is also supported by this projector. This data projector also support supported graphics resolutionss of 1024 x 768 (XGA), 1400 x 1050 (SXGA+), 1440 x 900 (WXGA+) and 1600 x 1200 (UXGA) and 800 x 600 (SVGA).
This projector's resolution (1920 x 1200 (WUXGA)) is in fact the best supported resolution amongst all projectors that are a similar age to the WUX400ST.
The worst supported resolution across similar types of projector is 640 x 480 (VGA).