diy 3d projector card board mini smartphone projector light novelty adjustable mobile phone projector portable cinema in a box hmp_20q

the effect of projecting on a white wall is better, and the darker the indoor environment, the better. you can project videos/movies played on your phone to the wall, this projector provids 8x image magnification. mirror barrel and box: it can be adjusted back and forth to adjust the projection size and image clarity. when using, put the smartphone into it, put it in, and push it to watch it.