basically this product be purchase because of the low cost and its description , take into account some feedback from other buyer . my expreiencium with it work very well , but in the dark , in a room you should turn off the light so you can watch it . he sharp left to say , especially the more control you must take care that the same projector , because he be the life of the projector . if you get lose or lose , it be like if you lose you projector , you may be handicap .