Tronfy Mini Multimedia Maximum 100" Screen Portatable LED LCD Pocket HD Projector Home Theater Night Movie Video Game Support wii PS3 PS4 XBOX PC Latop with HDMI(MHL) SD Interface Power Bank Supported TRONFY GM50 Native Resolution 320x480.80LM (Clear Picture and video in Dark Environment, if you looking for the projector which use for office/PPT/Excel/Word and so on, you need to get the Native Resolution is up to 800*480 or 1500LM+ ). When connecting the device with laptop, need to choose to the right signal source. TRONFY GM50 Contrast 500:1. Projection Size 30-120inches. Easy switching aspect ratio between 16:9 and 4:3. Build with Optical trapezoidal keystone correction, adjusting the picture trapezoidal distortion. The LED lamp works for over 20,000 hours. Playing Games Connect to your Playstation PS3 PS4 or X-Box ONE Wii to play your favorite games. Especially for Halloween, XMAS. TRONFY GM50 Mini LED Projector is convenient to carry with a lightweight and portable design. About Entertainment , watch your favorite programs with bigger screen.Or connect to your PC or DVD Player to watch newly released videos or movies.watch ball game, playing games /video game ball game. Sport , World Cup , maximal exercise. ( The projector supports only AV-IN((AV INPUT)) but not AV-OUT(OUTPUT), so AV port is not available for audio output.) TRONFY GM50 is the first time to use this function in low-cost micro projector .the projector can use micro-usb to supply power in the mini projector field. we had test it with high quality Power Bank (BY 5V 2A) : working with AXGIO L80 8000mAh A+ Power Bank External Charger is for 4-5 Hours, and working with Anker E3 10000 mAh Ultra External Charger is for 5+ Hours. And also sport Vehicle power supply supported(5V 2A). TRONFY GM50 has multi-function interface: Video in / USB Play / SD card play / VGA PC / HDMI (MHL) Connect. Share Wonderful moved moments with your friends , partner , lover , family and your dear guests... Or you can choose enjoy the moment with yourself in 3.5mm earphone port.( The projector supports only AV-IN((AV INPUT)) but not AV-OUT(OUTPUT), so AV port is not available for audio output. If you want to connect it with loudspeaker box for audio output, 3.5mm earphone port will be the better option.)