RedSun UC40 Pro Mini Portable LCD LED Home Theater Cinema Projector,Business projector, HD 1080P IP/IR/USB/SD/HDMI Completely sealed designed, high efciency ventilation design, largely upgraded the stability and life time LED lamp, works for over 20000 hours, with vivid color and abundant details. Electronics zoom function, easy picture size change Professional trouble diagnose and protection. Picture switch form 16:9 and 4:3 50W low power cost, Multi-function input AV/VGA/USB/SD/HDMI/Micro USB ATTENTION: NOT RECOMMENDED FOR PPT, EXCEL, OR OTHER BUSINESS USE. ONLY FOR HOME THEATER IN DARK ROOM.