the first time I purchase this projector the sound do not work . -lrb- volume would not go up or down , just stay at a low level -rrb- . the company resent I a new projector -lrb- take about a month , not the best or easiest customer service -rrb- and the new one work great , at least so I think . a few month later I realize the hdmus input do not work at all . this do not really bother I because I be only hook it up to a dvd player . the next issue be the dc power input start get shaky . I continuously have to `` rig '' or tape the cord into place for it to stay on every time I use it . the picture quality and projection size be good . if you manage to get one deliver to you that work , it be a great deal and great projector . the low price off brand will give you the possibility of headache and trouble but as consumer , that should be expect . just recently my projector be steal at a party . and I be actually consider buy this one again - hope for a good one to be send to I . I guess I have mix feeling about it .