Support Mulit-screen interactive.?GM60A?|| ? Super color technology delivers superior images for you, color reproduction up to 16.7K which create a richer and more immersive experience. || ? With native resolution to be 800x480 pixels and the highest resolution support 1080P to make it more clearer. ? High brightness can be up to 1000 lumens, 3 times brighter than competitive models. ? Picture switch from 16:9 and 4:3 to meet your different demands. ? Manual focus adjusting get picture from 34 to 130 inches, and the distance of projection is from 1 to 4 meters. ? Comes with keystone correction function to get wonderful pictures. ? Hidden focusing design, fashion appearance and highlight texture. ? Increase multiple ports, including AV, HDMI, SD card, USB, earphone, directly playing SD card and USB disk files. ? Long LED lamp life is over 30000 hours, never need to replace. ? Built-in HiFi speaker ( 8 ohms, 2W ). ? Convenient operation of functional keys, easy to use. Notice: NOT Recommended for PPT, Word, Excel or business presentation. Ideal for family entertainment, share happiness with friends or roommate, video games, watch movies, play cartons for kids or child education, perfect performance in dark environment. Using USB cable to connect your smartphone/ ipad to the projector, No need HDMI adapter or wireless. More convenient and stable. Laptop and PC can be connected via HDMI to HDMI or VGA cable. AV/SD/USB/HDMI slots make it possible to easily connect a desktop, notebook, tablet, DVD, WII, XBOX, MP5, digital camera to this projector.