WIFI INSIDE Stream media from iphone /ipad/Macbook/Andriod. Based on WI-FI direct technology with wifi inside you can easily connect your device with the projector's app UNi-Link OS. Enjoy the big screen 34inch-130 inch.</br>BUILT IN 2 SPEAKERS. The USB port is only for U-Disk / hard disk device connecting.NOTICE: Due to the copyright issue of Dolby this projector does not support Dolby's Audio decoding.</br>VARIETY OF INTERFACE can do what you want via HDMI / VGA / USB / AV/SD Card/IR connect PC / laptop / DVD player to enjoy videos or moviesConnect play station PS3 PS4 or X-Box ONE via HDMI port to enjoy games on big screen.</br>ONE YEAR FREE WARRANTY - This product enjoys 12 months free warranty and great customer service. Please feel free to contact seller for any product or order problem.</br>SUGGESTIONNOT RECOMMEND for PPT/business/teaching presentation. Need to use in Dark environment ideal for home theater movies and video game use. It only can adjust the size of image by changing the distance.</br></br>Product Description</br></br><b>Product Parameters:</b><br>Image System:LCD?<br> Brightness:300 Lumens<br>Contrast:800:1?<br>Native Resolution:800x480?<br>Highest "esolution:1080p?<br> Lamp:LED?<br>Lamp Life:20000Hours?<br>Lens:f=125<br>Operation:Manual?<br> Projection Distance:1.07M-3.8M<br>Projection Size:34-130 inches?<br>Aspect Ratio:4:3/16:9?<br>Color:16.7M?<br> Keystone:Manual +/-15 degrees<br>Power Supply:100-240V 50/60Hz?<br>Power 55W Max?<br>Input:USB/SD/AV/HDMI/VGA/IR<br>Output:3.5mm earphone<br>Speaker:2W*2<br>System:UNI-Link OS?<br> Languages:English?? French?? German?? Spanish?? Chinese?? etc.??23 languages??<br>Dimension:8 x 6x 2.8 inches?<br> Weight: 2.20pounds<br>Wireless: WIFI 2.4G<br><br> <b>Supported Formats:</b><br>Video:3GP(H263??MPEG4)/AVI(XVID??DIVX??H264)/MKV(XVID??DIVX??H264)/FLV(FLV1)MOV(H264)/MP4(MPEG4??AVC)/MPG(MPEG1)/VOB(MPEG2)/RMVB(RV40