Flylinktech 1080P LED Video Projector Portable 1000 Lumens 130 Inch Home Theater Projector Multimedia mini Projector with HDMI/USB/VGA/AV Projection Size:49-130 inches;Support Keystone Correction,easy changing in 16:9 and 4:3 aspect ratio; Our projector is not the SHORT THROW PROJECTOR (IF YOU LOOKING FOR Short throw projector please go for Google it FIRST) ,it only can adjust the size of image by change the distance.We suggest best Projection Distance:1.5-2M; best Projection Size:49-80 inches,which can make you obtain best User Experience. Not recommended for PPT or business presentation, ideal for home theater movies and video game use. Native Resolution:800*480;Contrast:1000:1 (NEED TO USE IN DARK ENVIRONMENT) Multi-function Interfaces USB*2/SD/VGA/HDMI/AV/Micro USB,can connect with your PC, laptop, or TV set-top box(STB) to watch TV,or device with USB. Usually, when the projectors works, the fan will make noise to Radiating due to the highly temperature. It will be better that you can have a break after 3-4 hours using to avoid overheating.(Updated projector, the fan noise is lower) Not recommended for PPT,Word,Excel or business presentation. Portable design, easy to take and travel.System Support:Multi-media (Music, Picture, Video, TXT); Enjoying watching movie at home and outside for camping. Multi-function input AV/USB/SD/HDMI/ 5V-OUT USB, 50W Low Power Cost. USB output is only for power supply.NOT FOR iphone,iPad charging