Support 1080P Full HD input the scale of screen is 4:3?? the distance of projection is from 3.51ft to 12.48ft;Multi-function input: IP/IR/USB/SD/HDMI.</br>100% brand new and high quality; Picture switch form 16:9 and 4:3</br>Keystone correction supported</br>LED lamp?? works for over20000 hours?? with vivid color and abundant details</br>Completely sealed designed?? high efciency ventilation design?? largely upgraded the stability and life time</br></br>Product Description</br></br>-100% brand new and high quality <br> -Picture switch form 16:9 and 4:3 <br> -Multi-function inout: IP/IR/USB/SD/HDMI <br> -Keystone correction supported <br> -Power bank charge charge function by USB port to connect <br> -55"power cost?? eco-oriented <br> -Electronics zoom function?? easy picture size change <br> -LED lamp?? works for over20000 hours?? with vivid color and abundant details <br> -The technology of projection is 0.24/'/' LCD?? LED tricolor(RGB) projection <br> -Support 1080P Full HD input the scale of screen is 4:3?? the distance of projection is from 0.3m to 3m <br> -Multi language support. <br> UC40 specifications for reference <br> Image Syste