Business and Education, Home, Engineering, Portable Projector, Commercial Projector, Business Teaching Projector, Cinema Projector, 3D Projector, Short Focal Projector, Entertainment, TV Projector.The LED lamp can work for over 20,000 hours and will provide a superb picture. Manual focus adjusting, get a picture from 10 to 100 inches. Easy changing in 16:9 and 4:3 aspect ratio. Low power consumption, energy saving and environmentally friendly. Multi-function interface: AV, TV, VGA, Micro SD/TF, (support up to 32G), USB, HDMI. Small and lightweight, easy to carry around. Specially designed short-cut keys (1, 2, 3, etc) on the remote for one-key play. “Turn” key on the remote for LED turning off and “Esc” key for LED waking up.