This is a portable miniature projector that is smaller and more entertaining than traditional projectors. The main function of this projector is through the APP connected mobile phone screen projection for playing video, reading office software, games, e-books, picture browsing and so on. The projector’s biggest challenge in dealing with the cooling holes, and the traditional grill cooling is different from the projector on both sides of the use of lattice design, the side of the side of the cooling holes for the sound hole than Grille more refined and home. Into the wind is the bottom of the hidden into the wind, through the gap between the gap to meet the needs of the amount of air intake. In addition, it also has a unique focusing experience, the top of the fuselage has a round knob button to focus rotation to deal with the needs of different occasions focus.