Projection Specification Projection Technology:DLP(0.3"DMD) Display chip: RGB LED Q6 Light Life: Up to 20,000 hours Light Luminance: 150 ANSI LED Lumens,Recommend for dark room use only Light Source: LED Standard Resolution:WVGA 854*480 support 1080p,4K Projection Area:30-120 inch Contrast:4000:1-5000:1 Projection Ratio:1.31:1(31.5 inch@1M ) Distortion:<1.0% Luminance Uniformity:>85% Projection Distance:0.5-4m Aspect Ratio:16:10 Focus mode:Manual focus Keystone Correction:Manual, Vertical: 45 degree,Horizontal 40 degree Projector Character:Interaction Projection Mode:Front Projection Offset function: NO 3D:Yes (DLP shutter 3D) System Parameters Screen Mirror: Airplay/MiraCast /Eshare OS: Android 9.0 CPU: Quad Core ARM Cortex-A55 CPU GPU:ARM Mali-G31 MP2 GPU Buffer Memory:1G/2G LPDDR4 Memory:8G/32G EMMC WIFI:2.4G/5G 802.11a/b/g/n/ac Bluetooth:BT 4.2 Basic Parameters Built in Battery: 5000mAh Works for 1 hour after fully charged,also can charge for smartphone,also work with 5V 3A Power bank Video Support(up to 4k):VP9-10,H.265,H.264,MPEG-4,WMV/VC-1,MPEG-2,MPEG-1,RealVideo 8/9/10 etc. Audio: Support: MP3, WMA, MP2, OGG, AAC, M4A, MA4, FLAC, APE, 3GP, WAV Image:Supports variety of image formats browsing (jpg, png, bmp etc.) Extended Storage: Support TF Card and Hard Disk Remote Control: Support(IR) Infrared and 2.4G wireless control Power: AC100-240V.50/60Hz DC 5V 3A Interface 1*TF Card: Max support 32G 1*HDMI: HDMI input 1.4 1*USB: USB 2.0 Support USB hard disk data read 1*Earphone: Audio output, 3.5mm joint (can connect with earphone or speaker box) 1* USB input: DC 5V 3A, OTG