The highest resolution supported by the Benq TH682 is 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 multimedia projectors of this age and spec. 640 x 480 (VGA) is also supported by this Benq projector.
This projector's resolution (1920 x 1200 (WUXGA)) is in fact the best supported resolution amongst all comparable spec data projectors that were released more than two years ago.
The worst supported resolution across comparable types of projector is 640 x 480 (VGA).