Optical parameters Brightness: 1600 Lumens. Ansi Lumens: 160 Ansi Lumens Resolution: 800x480P Pixels. Support 800x600 / 1024x768 / 1280x720 / 1280x800 Contrast Ratio: 1000:1 Dispaly Technology: 4.0" Liquid Crystal Display LED Lifetime: 30,000 hours LED Wattage: 45 Watt Aspect Ratio: 4:3/16:9/16:10 Keystone Correction: Vertical: +/-15°Interface Input: USB / TF card port, 3.5mm audio portOther Specification Speakers: 3W (SRS Sound Technology) Projection Screen Size (inch): 36-150 inchs Best projection Screen Size (inch): 60-100 inchs Projection Distance (m): 1 ~ 4meterUSB multimedia formatMovie format support: MPG,AV,TS,MOV,MKV,DAT,MP4,VOB.Audio format: MP3,WMA,AAC,M4a(aac).Picture format: JPG,JPEG,BMP,GIF,PNG,GIF formats picture browsing.Wi-Fi Mirroring: Miracast for Android phone mirror (Android version above 4.2)Airplay for iPhone mirrorUSB Plug-Play Mirroring only for iPhone.