Perfect for PPT or business presentation, ideal for home theater movies and video game Can provide crystal clear image in dark, image size 36 - 130 inches, native resolution 800 x 480, contrast: 800 : 1, aspect ratio: 4 : 3 / 16 : 9 Connect play station PS3 PS4 or X-Box ONE Wii via HDMI port to enjoy games on big screen Connect an external speaker ( via the 3.5 mm headphone jack, or via the 3 in 1 audio or video port ), the USB port is only for U-Disk / hard disk device connecting Beside WiFi display by UNi-Link OS, also can watch programs with bigger screen via VGA / HDMI / USB / SD card, connect PC / laptop / DVD player to enjoy videos or movies While you watching movies, you can charge your phones or pads with USB 5V out UNi-Link OS is compatible with above Android4.2.2, IOS6.0 and Win8.1 system