The highest resolution of the Auna EH3WS is VGA (640x480). That's 70% less resolution than the most frequently found native projector resolution of WXGA (1280x800).
This multimedia projector's resolution (VGA (640x480)) is in fact the worst resolution across all comparable spec data projectors that have been available for around the same time as the EH3WS.
The best resolution amongst similar types of multimedia projector is DCI 4K (4096 x 2160).
If you would prefer a projector with a higher resolution then you might want to look at the M100 (£247.61) (WVGA (854x480)), or the P100 (£402.55) (WVGA (854x480)) both from Pico Genie or the Epson EB-S04 (£249.99) (SVGA (800x600)).