Close range projection reduces not only shadows of the presenter but also glare of the projection light, making lectures & meetings less stressful. You can write letters or draw on the projected image with an interactive pen. Then you can store these letters in a computer. The interactive function allows effcient & effective presentations & promotes information sharing. High brightness of 2500 lm ensures bright & easy-to-see image projection. The volume level of the 10 W high-output speaker is enough for meeting rooms & classrooms; you do not need to use an external speaker. & web browsers of computers connected via Wireless LAN allow you to remotely operate the projector & check its status.