The highest resolution supported by the NEC PX602 is 4096 x 2160. That's over four times the resolution of the most frequently found graphics resolution of 1600 x 1200 (UXGA) (which is also supported by this projector). This data projector also support graphics resolutions of 640 x 480 (VGA), 800 x 600 (SVGA), 1024 x 768 (XGA), 1280 x 1024 (SXGA), 1400 x 1050 (SXGA+), 1920 x 1200 (WUXGA) and 2048 x 1080 and 2560 x 1600 (WQXGA).
A 4096 x 2160 graphics resolution is actually the best supported resolution across all data projectors of a comparable type and age to the PX602.
The worst supported resolution amongst comparable types of data projector is 640 x 400.